# What happens when two billiard balls collide?

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If the cue ball strikes a stationary billiard ball straight on, then the cue ball will stop moving after the collision. It will have transferred all of its kinetic energy to the other ball, which will move forward with the same velocity that the cue ball had before the collision.

## What happens to two billiard balls that collide?

When two billiard balls collide the collision is nearly elastic. An elastic collision is one in which the kinetic energy of the system is conserved before and after impact. … For collisions between balls, momentum is always conserved (just like in any other collision).

## What is the momentum of two billiard balls that collide?

This is because Newtons third law of motion states that forces are equal in size and opposite in direction- so when the balls collide, the momentum of the first ball is lost and is gained by the second ball and the total momentum of the two balls are the same before and after the collision.

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## What type of collision is billiard balls?

In a game of pool, the white ball, known as the cue ball, is hit and collides with another stationary ball, known as the object ball. Because of the hardness of pool balls, this collision is considered almost perfectly elastic collision, one in which the kinetic energy is conserved.

## How are billiard balls elastic collision?

In an elastic collision, the kinetic energies of the struck balls is exactly equal to the kinetic energy of the cue ball. If the collision is inelastic, some of the energy is lost, usually in the form of heat. (Heat represents another form of motion.

## Why do balls eventually come to a stop?

When you roll a ball on the ground, the electrons in the atoms on the surface of the ground push against the electrons in the atoms on the surface of your ball that is touching the ground. A rolling ball stops because the surface on which it rolls resists its motion.

## What happens when two moving objects collide?

Newton’s Third Law of Motion and Collisions

When two objects collide, each object pushes the other. Think about hitting a softball with a bat. The bat collides with the ball and pushes it away. The ball also exerts a force on the bat.

## Does Momentum have direction?

Momentum has both magnitude and direction and thus is a vector quantity. The units of momentum are kg m s−1 or newton seconds, N s. This is often referred to as linear momentum in order to distinguish it from angular momentum.

## Is a car crash an inelastic collision?

An inelastic collisions occurs when two objects collide and do not bounce away from each other. Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved. … A high speed car collision is an inelastic collision.

## What has the greatest effect on an object’s momentum?

The momentum change is dependent upon the velocity change; the object with the greatest velocity change has the greatest momentum change.

## What are 3 types of collisions?

Collisions are of three types:

• perfectly elastic collision.
• inelastic collision.
• perfectly inelastic collision.

## What collision Do objects stick together?

A collision in which the objects stick together is sometimes called a perfectly inelastic collision because it reduces internal kinetic energy more than does any other type of inelastic collision. In fact, such a collision reduces internal kinetic energy to the minimum it can have while still conserving momentum.

## What happens in a completely inelastic collision?

A perfectly inelastic collision occurs when the maximum amount of kinetic energy of a system is lost. In a perfectly inelastic collision, i.e., a zero coefficient of restitution, the colliding particles stick together. In such a collision, kinetic energy is lost by bonding the two bodies together.

## Are billiard balls perfectly elastic?

It will have transferred all of its kinetic energy to the other ball, which will move forward with the same velocity that the cue ball had before the collision. Collisions can only be elastic if the masses are equal. The masses of billiard balls are the same, which can make some collisions close to elastic.

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## Why do pool balls bounce?

No, the force exerted by the table is at right angles to the edge of the table, so the ball bounces off at the same angle it hit, but in the opposite direction. It’s just like when you throw a ball and it bounces off the floor. It doesn’t come back at you, it keeps going away from you.

## Do all billiard balls have the same mass?

Pool balls are generally the same size and weight, with the exception of the cue ball (the white ball). The cue ball and other balls can be a different size and weights depending on a few factors. 