# How does mass affect elastic collision?

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## How does mass affect elastic collision?

15.4 Elastic Collision of Two Unequal Mass Objects A smaller mass approaching a larger mass will bounce back in a collision. If a larger mass is intially moving toward a smaller mass, both will continue with momentum in the direction of the intial momentum.

## What happens to speed in an elastic collision?

Both momentum and kinetic energy are conserved quantities in elastic collisions. Suppose two similar trolleys are traveling toward each other with equal speed. They collide, bouncing off each other with no loss in speed. This collision is perfectly elastic because no energy has been lost.

## What happens when a fast moving object collides with another object?

Newton’s third law of motion is naturally applied to collisions between two objects. In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to speed up (gain momentum) and the other object to slow down (lose momentum).

## Do objects have the same speed after an elastic collision?

The magnitude of the relative velocity is the same before and after the collision. That means if we are sitting on object 1 moving at velocity , object 2 will look like it is moving at the same speed both before and after the collision.

## Does mass have to be the same for elastic collision?

This means that you can consider elastic collision between any two masses, it is only an assumption you are making of the situation. Elastic simply means that no energy is dissipated during the collision, so the total kinetic energy before and after the collision is the same.

## How does mass and speed affect collision?

The greater the mass of an object, the less its velocity will change in a collision, and the less kinetic energy will be lost. In summary, mass affects speed in collisions by determining the magnitude of the velocity change, which is influenced by the laws of conservation of momentum and conservation of energy.

## Does elastic collision have the same mass and velocity?

Elastic Collision, Equal Masses For a head-on collision with a stationary object of equal mass, the projectile will come to rest and the target will move off with equal velocity, like a head-on shot with the cue ball on a pool table.

## Does elastic collision depend on velocity?

Sure. If we have a collision where the final velocity is say 90m/s and the intial velocity was 100m/s, then we have an elasticity (as you refer to it) or coefficient of restitution, e=0.90.

## Is velocity equal in elastic collision?

In a perfectly inelastic collision, the final velocity of both objects is identical. Momentum is conserved, but energy is not, i.e. the total momentum of the system remains constant, but some energy is lost. In a perfectly elastic collision, the final velocity of both objects is different.

## What are the 2 types of collision?

- Inelastic collisions: momentum is conserved,
- Elastic collisions: momentum is conserved and kinetic energy is conserved.

## Which object has no momentum?

The momentum of any object that is at rest is 0. Objects at rest do not have momentum – they do not have any mass in motion. Both variables – mass and velocity – are important in comparing the momentum of two objects.

## Which situations describe an elastic collision?

Elastic collisions occur when both the momentum and kinetic energy are conserved, similar to how billiard balls bounce off each other and move at the same speeds as before. Inelastic collisions happen when only the momentum is conserved but not the kinetic energy.

## What is the impact of mass in a collision?

When a collision occurs between two bodies, the body with the larger mass tends to maintain its motion, while the body with the smaller mass moves at a higher speed. This means that mass has an effect on the speed of motion after a collision, and therefore on the way that collisions affect bodies.

## What is the relationship between mass and elastic energy?

If a mass m is loaded gently onto a spring the spring stretches a length x where it is at equilibrium such that mg=kx. During this m lost potential energy equal to mgx(x is the difference from the ground)and this was converted to elastic potential energy of the spring given by 1/2kx^2 ie mgx =1/2kx^2.

## Does mass affect force in a collision?

Many collisions involve objects with different masses. We know that each ball in the collision shown will experience an equal and opposite force. From Newton’s second law, we know that the acceleration of an object depends on its mass and the applied force.

## Does mass influence elastic energy?

Elastic potential energy is given by U = 0.5kx2. It is not affected by mass, at least at the level of introductory college physics.