# What happens when two billiard balls collide?

## Are pool balls elastic or inelastic?

When two billiards balls collide, the bump is almost elastic. An elastic collision is one in which the kinetic energy of the system is conserved before and after the collision.

## What happens when two moving objects collide?

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).

## What is the total momentum of billiard balls before and after the cue ball collides with another ball?

No matter what type of collision you have, momentum will be conserved. This means that the total momentum of all of the colliding objects before the collision will be the same as the total momentum afterwards.

## What are 3 types of collisions?

• Perfectly elastic collision.
• Inelastic collision.
• Perfectly inelastic collision.

## What is the formula for a 2d collision?

Two-dimensional collisions of point masses where mass 2 is initially at rest conserve momentum along the initial direction of mass 1 (the x-axis), stated by m1v1 = m1v′1 cos θ1 + m2v′2 cos θ2 and along the direction perpendicular to the initial direction (the y-axis) stated by 0 = m1v′1y + m2v′2y.

## Which ball is more elastic?

The rubber ball will bounce the highest because it has the greatest elasticity. When the rubber ball hits the ground it gets compressed, or squished, and because it is very elastic, it quickly returns to its original shape.

## What is the motion of the billiard ball?

The ball, as we mentioned above, will have a spin and a sliding motion at the very start. the velocity of P. = rotation velocity at P. i.e. the moment when the sliding ceases and the ball has a pure rolling motion where v = Rω..

## What is the billiard ball effect?

The divergence of shot pellets caused by collisions of pellets in the shot string as it comes into contact with the target.

## Is momentum is a Vector?

The momentum of a body is a vector quantity, for it is the product of mass, a scalar, by velocity, a vector.

## What are the 2 types of collisions?

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

## What are the 4 types of collisions?

• Elastic collisions: both momentum as well as kinetic energy are conserved.
• Inelastic collisions: only momentum is conserved.
• Perfectly inelastic collisions: The kinetic energy is lost, resulting in the colliding objects to stick to one another after the collision.
• Head-on collision and oblique collision.

## What is also known as mass in motion?

Momentum can be defined as mass in motion. All objects have mass; so if an object is moving, then it has momentum – it has its mass in motion.

## How is the collision of a cue ball and a billiard ball an example of Newton’s third law and the conservation of momentum?

In any collision, momentum transfers from one object to another. The billiard ball gains the momentum lost by the cue ball. The total momentum, however, does not change. According to the law of conservation of momentum, the total momentum of a group of objects stays the same unless outside forces act on the objects.

## Is momentum a form of energy?

Momentum is NOT a form of energy; it is simply a quantity which proves to be useful in the analysis of situations involving forces and impulses. b. TRUE – If an object has momentum, then it is moving. If it is moving, then it has kinetic energy.

## What type of collision occurs between two billiard balls collide?

This is because they depend on the separation between the centres of the billiard balls. Hence, the collision is elastic.