Super Elastic Collision: Detailed Facts And FAQs

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Let us discuss some detailed facts about a super elastic collision, how and where does it occurs, some examples, and detailed facts.

Super elastic collisions are those in which the colliding particle does not lose its kinetic energy, instead gains some kinetic energy from the particle it is colliding with and accelerates at a faster rate after the collision.

What is a super elastic collision

The collision is said to be elastic when the momentum and the kinetic energy of the object after the collision are conserved. There may be loss or gain of energy during the collision of the objects.

A collision in which there is no loss of energy instead the object gains an additional amount of energy then the collision is said to be a super elastic collision. This auxiliary supply of kinetic energy may be the result of the conversion of the potential energy of the object into kinetic energy.

Where does super elastic collision occur

Most of the collisions in nature are inelastic collisions where the kinetic energy of the colliding object is converted into some other form of energy.

Well, a super elastic collision occurs mostly in explosive reactions like nuclear fissions, reactors, supernovas, explosions, etc that create critical impact. This is a result due to a gain of the additional amount of kinetic energy without any loss of energy. On collision, subsequently, an object receives the energy from the object it is colliding with, which excels the kinetic energy of the object.

Super elastic collision formula

Consider two molecules of mass m1 and m2. A molecule of mass m1 is approaching from infinity with velocity u1 and collides with mass m2 moving at velocity u2. After a collision, both the masses diverts away from each other making an angle with a plane with velocities v1 and v2.

In an elastic collision, the momentum of the particles before and after a collision is conserved, hence given by the relation

m1u1+m2u2=m1v1+m2v2

Where m1, m2 are masses of particle 1 & 2 respectively

u1, u2 are initial velocities of both the particle before colliding, and

v1, v2 are final velocities of the particles after collision.

The momentum of the colliding molecule after a collision will be greater than the momentum of the molecule before the collision.

m1u1<m1v1

Which implies that u1<v1

And the kinetic energy of the particle in the collision is

1/2 m1u12+1/2 m2u22=1/2 m1v12+1/2 m2v22

Since u1<v1, the kinetic energy of the colliding molecule after colliding will be increased.

1/2 m1u12<1/2 m1v12

This means the energy associated with molecule 2 will be reduced as it will transfer its potential energy to molecule 1 that will convert into kinetic energy.

Super elastic collision example

Let us discuss some examples of super elastic collision to understand the term better.

Nuclear fission

Fission is the process of splitting a reactant into two or more products. A nucleus of the atom splits into two or more nuclei when a highly energetic photon collides with the nuclei.

super elastic collision
Nuclear Fission

A photon approaching from infinity carries kinetic energy with it, on bombarding with the nucleus it releases its energy to the nucleus due to which the nucleus becomes unstable. This results in a splitting of the nucleus into two daughter nuclei releasing out the photon.

The mass of the nucleus reduces to half and the potential energy of the nucleus is converted into kinetic energy and hence the final kinetic energy given out in a process after the collision is high. This technique is used in nuclear weapons, in nuclear reactors to produce huge energy.

Shape memory alloys

The shape memory alloys are super elastic materials manufactured at a specific temperature. The alloy is molded into a particular shape while heating, maintaining a certain temperature, and quickly cooling it down. This shape is memorized by the alloy.

An object changes its shape when an external load is imposed on it but regains its shape once the load is removed and exposed to the same temperature at which it was formed. This superelasticity is a reversible process.

Mostly, Copper-Aluminium-Nickel and Nickel-Titanium alloys are used as a shape memory alloy. Nickel-titanium is one such shape memory alloy used in manufacturing orthodontic wires.

Uranium bomb

Uranium-235 is a highly radioactive atom and gives out a large amount of energy during its fission, that is why it is mostly used in reactors and explosives.

super elastic collision
Fission of Uranium atom

This is similar to nuclear fission, the neutron when collides with the uranium-235 atom, the kinetic energy of the neutron is transferred onto a uranium atom and becomes unstable due to an extra neutron availability. This neutron recoils along with the atom.

The highly unstable atom splits up into two daughter nuclei shown in the above diagram, releasing three free nuclei which then react with another atom of uranium for fission. This reaction gives out an enormous amount of energy and heat in the surrounding, thus it is an exothermic reaction.

Spring

The spring when compressed, stores the potential energy in it. On releasing the pressure from the string, it gives out a large amount of potential energy in the form of kinetic energy.

Read more on spring potential energy.

Comet approaching sun

The sun has the highest gravitational attraction force in a solar nebula and hence most of the comets approaching from the far nebula reach around the Sun. They gain enough potential energy through radiations emitted by the Sun and deflect in a parabolic pathway. The kinetic energy of the comet after deflection is far greater than its kinetic energy while approaching the Sun.

Is impulse conserved in an elastic collision

Impulse is defined as a force stimulated on the object in a definite time interval and given by the formula

I=FΔ t

Where I is the impulse

F is a force

Δ t is a change in time.

Impulse is also equal to the change in the momentum of the object.

I=ΔP

Hence, ΔP=F Δ t

In an elastic collision, the change in momentum of the object is equal to the difference between the momentum of the object before and after the collision.

ΔP=m[Vf-Vi]

Where m is a mass of the colliding object.

Vf is the final velocity of the object

Vi is the initial velocity of the object

Therefore,

F Δ t= m[Vf-Vi]

The impulse on the object in a collision can be found out by finding the difference between the velocities of the object before and after colliding.

It is obvious that there is an impulse on the collision on both the objects, but due to the opposite force of reaction the impulse is reduced and canceled out. In most cases, there is a slight change in the momentum of the object.

How do you solve a perfectly elastic collision

In a perfectly elastic collision, there is no loss of the kinetic energy of the object after the collision. The momentum and the kinetic energy of the object in a perfectly elastic collision are conserved.

Consider a particle of mass m1 accelerating at a velocity u1 strikes the particle of mass m2 moving with velocity u2, then the momentum of particle 1 is m1 u1 and that of particle 2 is m2u2. Particle 1 approaches particle 2 and collides with it creating a net impact zero and both particles 1 & 2 gains velocity v1 and v2 respectively and divert in two different directions.

Since the momentum of the particles is conserved before and after collision

m1u1+m2u2= m1v1+ m2v2

There is no loss of kinetic energies of the particles, hence the kinetic energy before and after collision remains unchanged.

1/2 m1u1+1/2 m2u2=1/2 m1v1+1/2 m2v2

m1(u1-v1)=m2(v2-u2)

m1/m2=v2-u2/u1-v1

Read more on 8+ Perfectly Elastic Collision Examples: Detailed Facts And FAQs.

Frequently Asked Questions

Q1. An object A of mass 5 kg collides with object B at rest at a speed of 3m/s. After colliding both the objects move at a speed of 0.8m/s. What is the mass of object B? What is the impulse on the object due to collision?

Given:m1=5kg

m2=?

u1=3m/s

u2=0

v1=v2=0.8m/s

Since, the momentum is conserved in the collision

m1u1+m2u2=m1v1+m2v2

5* 3+m2*0=5*0.8+m2*0.8

15+0=4+m2*0.8

11=m2*0.8

m2=11/0.8=13.75kg

The mass of object 2 is 13.75 kg.

The total momentum of the object before the collision is

Pinitial=m1u1+m2u2=5*3+13.75*0=15

Pfinal=m1v1+m2v2 = 5*0.8 + 13.75 * 0.8 = 4+11 = 15

The impulse on the object due to collision is

I = ΔP = Pfinal – Pinitial = 15-15 = 0

Hence, there is no impulse conserved in the collision.

What is the impulse due to collision?

An impulse is the duration of the force applied on the particles while colliding.

It is also defined as the change in momentum of the objects before and after a collision and is equal to the force imposed by the object for finite time duration.

How does the impulse defer in a perfectly elastic collision and super elastic collision?

The momentum of the object is conserved hence the impulse becomes zero in a perfectly elastic collision.

In super elastic collision, the momentum of the object increases after colliding as the kinetic energy excels, therefore the impulse is positive.

Also Read:

23 Perfectly Inelastic Collision Examples: Detailed Facts And FAQs

boxing

In this article, we are going to discuss various perfectly inelastic collision examples and detailed facts on each.

The following is a list of perfectly inelastic collision examples:-

Car accident

A car approaching with a speed thwacks the car standing at rest, then the kinetic energy of the car is transferred to the car at rest converting into some other form of energy that could be potential energy or heat energy and sound energy. This is an example of inelastic collision because the kinetic energy between the collisions of cars is not conserved.

Car Accident

Boxing

Boxing is an example of an inelastic collision. The two players hit each other using their muscular force. Each punch hitting the opponent player is an example of a collision, the energy is not conserved here, and it turns into either the frictional energy due to rubbing of body or potential of the muscular force.

boxing

Shooting

When a bullet is fired from the gun, it moves with its kinetic energy towards the target. After hitting the target, its kinetic energy is reduced to zero after traversing inside the target, and even if it travels through the target plate then the momentum and the kinetic energy of the bullet changes thus does not follows the law of conservation of energy and momentum and hence is an example of inelastic collision.

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Image Credit: Pixabay

Mud ball thrown on a rigid wall

If you threw a mud ball on the wall, it will collide and stuck with the wall changing its shape. No kinetic energy will be conserved and hence is an inelastic collision.

Mud ball thrown on a rigid wall

Kayak boat crossing the steeper slope

While riding a kayak, if you cross a steeper slope and come to the gentle level of the water, the water will splash over you equal to the force exerted by the kayak on the volume of water. We have to maintain the momentum of the kayak, well the kinetic energy of the kayak varies.

Kayak boat crossing the steeper slope

Stone thrown in water bodies

On throwing a stone in water, the kinetic energy of the stone is converted into vibrational energy on immersing through the layers of the water, which is reflected as a wavy concentric pattern by the molecules on the surface of the water.

Stone thrown in water bodies

Striking a matchstick on the matchbox surface

On striking a matchstick on the surface of the matchbox, the frictional force is produced. This frictional energy is converted into heat energy. Since red phosphorous on a matchstick is highly volatile, it catches fire on rubbing on a surface. Here, the frictional energy is not conserved but converted into heat energy.

An Object falling on the ground

The object falling on the ground converts its gained potential energy into kinetic energy for its flight. After making a fall on the ground it doesn’t bounce back or elapse the distance but stands at rest making its velocity zero and thus the kinetic energy becomes zero. Hence is an example of inelastic collision.

Breaking a glass

Glass, Broken, Shattered, Broken Glass, Shattered Glass
Shattering glass,
Image credit: pixabay

On hitting a glass with any object, it breaks into pieces. The kinetic energy imparted on the glass by the object converts into the vibration pattern in the molecules constituting the glass that results in the glass breaking.

Drawing water from the well

While drawing water from the well using a pot, a pot is released into the well tied to the rope on a pulley. The pot will initially collide with the surface of the water.

On the collision of a pot with the water surface, the kinetic energy of the pot is converted into vibrational energy creating ripples on the surface of the water. The water is filled up in the pot due to the ripples formed on collision.

Ball bouncing back on the ground

The ball bouncing on the ball gives away its kinetic energy on every bounce. This implies that the kinetic energy of the ball drops frequently and is not conserved.

Two molecules of different masses colliding with each other

Consider a molecule 1 of mass ‘m’ approaching molecule 2 at rest having a mass ‘2m’ which is double than that of molecule 1. The velocity of molecule 1 is ‘v1’.

perfectly inelastic collision examples
Before collision

On colliding, molecule 1 with molecule 2, they move with the velocity ‘v’.

perfectly inelastic collision examples
After collision

As per the law of conservation of momentum

CodeCogsEqn 41 2

Since m1=m, m2=2m and v2=0

CodeCogsEqn 42 3

This implies that for momentum to be conserved, final velocity after collision should be equal to the 1/3rd times the velocity of the colliding molecule.

Henceforth, the kinetic energy of the molecules is not conserved and therefore it is an inelastic collision.

Waves hitting the rock cliff

The ocean water has more potential energy stored with it in the central volume of the oceanic water columns. The water surface lying at the coastline constitutes the kinetic energy with it.

This wave approaches the coastline, hitting the rock cliffs smacking across the cliff, and returning back to the ocean. This consequence in the erosion of a rock cliff is due to abrasion and hydraulic actions. The kinetic energy of the wave is transferred into some other form of energy, hence it is a type of inelastic collision.

Waterfall

The flowing water bodies always carry debris along with it, which gets deposited into the sedimentary basin when the water makes its fall along with the debris. The flowing water is associated with kinetic energy with it.

The velocity of the water increases while making its fall from the cliff. After making the fall, the kinetic energy of the water decreases converting a part of it into frictional energy pushing debris of rocks along with it.

Clouds colliding with each other

The water vapours condense to form clouds and store enough potential energy with them. When they have enough potential energy, two mobile clouds collide and this energy is converted into kinetic energy and the water droplets flow down to the earth’s surface due to gravity.

On rainfall, the kinetic energy of the raindrops decreases to nil on meeting the ground surface.

Shot bombs

On throwing a shot bomb on the ground, the kinetic energy given to the shot bomb is converted into frictional energy when it touches the ground surface and creates heat and sound energy.

Car hitting a tree

A car accelerating at a certain speed if hits the tree by accident then the kinetic energy of the car is converted to heat energy, sound energy and results in the deformation of a car. The kinetic energy is converted to some other form of energy hence it is an example of inelastic collision.

Weight falling on the object

If a heavy mass falls on the object causing the damage, is an example of an inelastic collision, as there is no movement of the object causing the deformation.

Slider

When you take a drift on a slider, the body freely moves from the upper point to the lower point of the slider because of the steeper slope converting the potential energy of the body into kinetic energy. The body accelerates down the slope.

The body comes to rest on colliding with the ground converting the kinetic energy into the frictional force. Since the upper part of our body is still in the kinetic motion in the slanting direction downward, the body continues to move in that direction causing the body to move a little ahead even after the feet touch the ground surface.

Mixer grinder

The spinning of the blades due to the rotation of a shaft sets the mixture into circular motion. The energized mixture particles collide with the blade that resulting in a grinding of the mixture into fine particles and generating heat which is released out by the mixture.

Since the energy is not conserved in the process, subsequently converting the kinetic energy into heat energy, this is a type of inelastic collision of blades and mixture particles.

Fruit falling from the tree

The kinetic energy of the fruit falling on the ground due to gravity is not conserved after it makes the fall on the ground.

In case the momentum of the fruit is conserved then it will bounce back utilizing its potential energy into kinetic energy and finally dropping on the ground with nil energy. Hence the kinetic energy is not conserved by the fruit fallen on the ground. This is a type of inelastic collision of fruit with the ground.

Crash of tin bottle

On crashing the tin bottle it does not regain the original shape rather deforms its shape due to the force applied and is not an elastic material. Crashing a tin bottle is an example of an inelastic collision.

Ringing a bell

In old days, before the electric bell was invented, the bell was rung by hammering the metallic plate that produced the sound waves. On hitting the bell, the potential energy is converted into sound energy. No energy is conserved in this collision, hence is also an example of inelastic collision.

Comet

Most of the time due to the strong attraction of the planet, small comets tend to fall into the atmosphere of the planet. The kinetic energy of the comet is converted into heat energy by colliding with the atmosphere of the planet due to friction.

What is Inelastic Collision

The particle after colliding does not retain the kinetic energy and momentum then the collision is called an inelastic collision. The kinetic energy is not conserved due to the internal friction, and conversion of energy in some other form.

Consider a body of mass m1 moving with the velocity v1, collides with the body of mass m2 approaching with velocity v2. After colliding, the final velocity ‘v’ of the body is given by the relation

CodeCogsEqn 43 3

It shows that the momentum, as well as the kinetic energy of the object, after the collision is not conserved, hence it is an inelastic collision.

Read more on 15+ Elastic Collision Examples: Detailed Facts And FAQs.

Frequently Asked Questions

What is Collision?

Two particles bombarding with each other exchanging their energy and momentum with one another is called a collision.

The collision of the particles and thereafter the transfer of the energies and momentum depend upon the mass, initial velocity of the particle, and the force applied on the particles.

Why does the kinetic energy of the particles not conserved in an inelastic collision?

For a collision to be an elastic collision, the kinetic energy has to be conserved even after the collision.

In an inelastic collision, the kinetic energy of the particle is converted into some other form of energy depending upon the mass and configuration of the particle it is colliding with and the energy it is associated.

Why coconut falling on the ground is not an elastic collision?

The coconut falling on the ground is not an elastic collision as the momentum and the kinetic energy of the coconut are not conserved.

The kinetic energy of the coconut falling on the ground due to gravity is not conserved rather than it comes to a rest with zero velocity once it strikes the ground surface.

What type of collision is between the marbles?

The collision of the marbles is a type of elastic collision.

On striking the marble on another marble at rest, the kinetic energy of the striking marble is transferred to the marble at rest hence conserving the kinetic energy and momentum after the collision.

Also Read:

15 Elastic Collision Examples: Detailed Facts And FAQs

In this article, we are going to discuss various elastic collision examples and detailed facts on each.

The following is a list of elastic collision examples:-

Newton’s cradle

It consists of bobs of equal masses hanging on the cradle with the support of a string of equal length. When the momentum is applied to the bob at one end, bob 1 moves with velocity V1 having the momentum of mu1 and gaining kinetic energy (1/2)m1u12

elastic collision examples
Newton’s Cradle

On colliding the bob 1 to bob 2 this kinetic energy is supplied to the bob 2 in the form of potential energy, as bob 2 to 4 are in close vicinity to each other, hence the momentum is conserved and the potential energy is transferred to the subsequent bobs and eventually releasing to the last bob in a line, which then swings in the air by converting the potential energy received into the kinetic energy equal to the given kinetic energy to the bob 1.

Let us formulate how momentum and energy are conserved in the case of Newton’s cradle.

As per the conservational law of momentum, the equation is written as

CodeCogsEqn 30 3

Since, m1=m2=m3=m4=m5=m and the velocities of the bobs 2,3 and 4 remains unchanged in the collisions, that is equal to zero. And initial velocity of the bob 5 is zero and after collision the velocity of the bob 1 becomes zero.

Therefore,

mu1=mv5

The velocity of the bob 1 and 5 remains the same, and hence,

u1=v5=v

therefore mv=mv

The momentum before and after the collision is equal.

The same way the kinetic energy of bob 1 and 5 remains the same as the velocities of both the bob is constant. We need not consider the kinetic energies of bob 2-4 as there is no velocity of the bobs seen.

Ball bouncing back on the ground

elastic collision examples
Ball bouncing on the ground

The ball bouncing on the ground is an example of the elastic collision too. The ball retains its momentum while returning down to the ground and hence bounce back until its energy is reduced.

Collision of billiard balls

See the source image
On striking billiard ball; Image credit: jrnl.ie

When you hit a billiard ball to target another ball, you apply a force on the ball, it moves with the kinetic energy and transfers this energy to the next ball on colliding. Since there is a transfer of the kinetic energy from one ball to the next and the momentum is conserved, we can say that this is an elastic collision.

Carrom

For hitting a carrommen by a striker, you are actually giving momentum to the striker supplying the kinetic energy to the striker to hit the carrommen. On striking the energy is transferred to the carrommen making its way to the net hole of the carom board.

Tennis

See the source image
Hitting tennis ball with racket; Image credit: TheBaltimoreSun

The kinetic energy is supplied to the ball by hitting it with a tennis racket. The ball collides with the net of the racket which in addition provides elastic potential energy to the ball which is converted into kinetic energy. The opponent hits the ball maintaining the energy of the ball and the process continues until the ball drops its momentum. This is also an example of collision as the momentum and the kinetic energy of the ball are conserved after every collision.

Cricket

A batman hitting the ball is also an example of an elastic collision. The ball approaching the batman from the bowler has kinetic energy and momentum, which is maintained after hitting a ball with a bat and carries away the ball with momentum and the kinetic energy until drops down.

Compton Scattering

Compton scattering is also an example of elastic collision in which both momentum and energy of the particles are conserved.

See the source image
Compton Scattering;
Image credit: Blogspot

It is a collision between a photon and a charged particle. A photon with high kinetic energy strikes the electron at rest making an angle of 180 degrees. The energy of the photon can be calculated by

Ephoton=hc/λ

The kinetic energy of the photon is transferred to the stable charged particle, this energy is recoiled by the electron and then scattered making an angle φ with the plane. The photon is scattered away making an angle θ releasing or gaining the energy by the electron. If the energy of the photon decreases it implies that its wavelength is increased.

The difference in the wavelength of the photon before and after colliding is given by the equation:-

CodeCogsEqn 31 1 1

Trampoline

A person jumping on a trampoline exerts elastic potential energy that helps him to jump higher converting the elastic potential energy into kinetic energy. After every jump attaining a certain height, a person makes a pause in the air when the total kinetic energy of the body is converted into potential energy, and a person comes vertically down due to the gravitational force.

When a person jumps on the trampoline, the energy of the person on the trampoline and the elastic potential energy of the trampoline is conserved even after the frequent jumps. Hence it is a type of elastic collision.

A car hitting a bike in motion

If a car at very high speed hits a bike in motion, then the bike will accelerate with an increase in velocity, and be carried away to a distance before collapsing, at the same time the car experiences a back jerk.

This is because the kinetic energy of the car accelerating at very high speed transfers its energy to the bike that resulting in a carried away of the bike increasing its velocity. Here we can see that the energy is conserved.

Molecular collision in the air

In the air, molecules move in a random motion as the molecules in the air are separated by a large distance between them and hence are free to move. There are more probabilities of molecules colliding with each other.

The momentum and energy of the molecules are conserved hence showing elastic collisions.

Plucking a mango from a tree using a slingshot

A slingshot comes with a rubber belt which when stretched produced enough potential energy and is supplied to the stone holding across it. This stone applies force on the targeted mango and changes its direction and falls back to the ground due to gravity. Here, kinetic energy is conserved.

Two boats tied to the mooring buoy

The boat floats due to buoyant force by the volume of river water. As the river water is turbid the boats tied to the mooring buoy will shake along with the small waves upwelling on the water surface. The potential energy of the huge water bodies is very high.

As a result of turbidity and unstable boats, there are more chances of two boats colliding with each other. On collision the boats of equal weight repel away from each other maintaining equal momentum and energy is transferred equally to both the boats. Hence is an example of elastic collision.

Rubber band

When the rubber band is stretched, it stores potential energy with it; which when released, gives out an immense amount of energy. The rubber band is an elastic item that regains its shape and size even after stretching. The energy is conserved in a process and hence is an example of an elastic collision.

Skipping stone in water

When a stone is targeted over the water body, a stone bounces on the upper level of water because of the conversion of its energy from kinetic to potential and from potential to kinetic energy depending on the spin and force applied onto a stone by the person. The momentum of the stone is conserved in the process making it possible to skip the long-distance and bounce on the surface of the water.

Two river tributaries joins to form a single water way

Two rivers flowing with two different velocities combine and direct the water in a single direction. As the volume of the water in the river after joining into single tributaries doubles, the speed of the flowing water slightly lowers but the momentum of the flowing water is conserved.

What is Collision

The striking of two or more particles against each other in space transferring their energies and momentum to one other is known as a collision.

When the object is in a stable state of rest, it has enough potential energy associated with it, which is converted into kinetic energy during its motion. As the object is in motion, there are probabilities of bombarding with another object in the surrounding.

On collision the object transfers its energy to the object it collides with, which depends upon whether the opposite object is at rest or into motion, the speed and direction of the object too; based on it the object may gain or transfer its energy.

What is Elastic Collision

After the collision of particles, if there is a transfer of momentum and energy to the particle colliding with each other, then it is known as an elastic collision. In an elastic collision, both momentum and energy are conserved.

Consider a particle of mass m1, moving with velocity V1 collides with a particle having mass m2 at rest. After the collision, the mass m2 displaced from its place with velocity V2, and mass m1 comes to rest after diverting in a different direction. The momentum of the two particles colliding with each other can be given by the formula

m1u1+m2u2=m1v1+m2v2

Where m1, m2 are masses of particle 1 & 2 respectively

u1, u2 are initial velocities of both the particle before colliding, and

v1, v2 are final velocities of the particles after collision.

Since the sum of the velocities of the two particles before and after collision remains the same, it is evident that the momentum of the particles is conserved before and after the collision in the case of elastic collision.

Same way the kinetic energy of the particles is formulated as

CodeCogsEqn 32 2

The sum of the kinetic energies of the particles before and after collision are equal, hence the kinetic energy of the particle in elastic collision is conserved.

Read more on 20+ Examples of Potential Energy: Detailed Facts

Frequently Asked Questions

A man pushing a box of mass 20kg at velocity 1m/s hits an object at rest having mass 2kg. What will be the velocity of the object of mass after collision?

Given: m1=20kg

m2=2 kg

v1=1m/s

Since this is an elastic collision, the momentum of the box and object is conserved.

m1v1=m2v2

v2=m1v1/m2

v2=(20kg*1m/s)/2kg

v2=10m/s

Hence the velocity of the object will be 10m/s after colliding with a box of mass 20 kg.

What is the difference between elastic and inelastic collision?

In an elastic collision, the kinetic energy, as well as the momentum, is conserved before and after a collision.

Unlike the elastic collision, inelastic collision does not obey the law of conservation of energy. The kinetic energy of the object before and after a collision is not the same; it converts into some other form of energy.

How can one minimize the impact after collision?

To reduce the consequences that will result after the collision, we can lower the force while colliding the two objects.

The force exerting on the colliding objects can be reduced by increasing the time duration of a path taken for a collision to occur.

Why kinetic energy is not conserved in the case of inelastic collision?

In an inelastic collision, the momentum and the energy are not conserved after collision.

The kinetic energy is converted into some other form of energy, maybe heat energy, potential energy, mechanical energy; hence, kinetic energy is not conserved in the case of inelastic collision.

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