Why do billiard balls bounce?

One example of an inelastic collision in billiards is when the player hits the cue ball with the pool stick. … It transfers some of its kinetic energy to the cue ball, which rolls forward. But some of the kinetic energy is also lost to friction between the ball and the table, causing it to roll.

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.

What happens when two billiard balls collide head on?

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 the general case, the collision is not head on, which is what the figure shows.

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What happens if a pool ball bounces out of the pocket?

If the player that is breaking pockets the white cue ball during the break, regardless of how many other balls may have been pocketed, it is a foul. It becomes the opposing player’s turn. If at any time during the game a player pockets the white cue ball, they lose their turn.

How do you bounce a billiard ball?

In order to jump the cue ball, elevate the back of your cue stick to 45 degrees and then shoot down, through the center, of the cue ball. Follow straight through the ball (don’t jerk back on contact.)

When two billiard balls collide which is always conserved?

When two objects collide, they interact during the collision and the elastic forces that arise upon contact of the two objects with each other provide the change in object’s velocity and/or direction of motion. However, total momentum and masses of two objects are usually conserved in collisions.

What sound do pool balls make?

There is a word, usually used in a description of a pool hall, to describe the noise that billiard balls make when they hit one another.

English translation: clack.

English term or phrase: the sound of billiard balls hitting each other
Selected answer: clack
Entered by: R-i-c-h-a-r-d

What happens when two objects collide?

When two objects collide, each object pushes the other. … Newton’s third law states that when one object exerts a force on another, the second object exerts an equal but opposite force on the first object. These forces are sometimes called action force andreaction force or force pairs.

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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.

Can you leave pool balls on the table?

The answer is yes you can, but you shouldn’t. Leaving pool balls on the table expose them to direct UV light which contributes to the yellowing of balls over time. Another reason not to leave them on the pool table is that low quality balls are known to leave marks and damage the pool table felt.

Is ball in hand a real rule?

“Ball in hand” means you are allowed to place the cue ball anywhere on the table (with the exception of fouls on the break which result in “ball in hand” behind the head string) and shoot any of your balls (or the 8, if all your category of balls has been pocketed.)

Why are masse shots not allowed?

Jumps and masse shots have the greater potential to damage the cloth. If the establishment doesn’t allow those shots it’s probably because most of the players at your average pool room aren’t of high enough caliber to execute them.


Unless otherwise stated in rules for a specific game it is legal to cause the cue ball to rise off the bed of the table by elevating the cue stick on the shot, and forcing the cue ball to rebound from the bed of the table. Any miscue when executing a jump shot is a foul.

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Where do you hit the cue ball to jump?

You’re going to hit above the center of the cue ball at about a 45 degree angle. In planning the shot, you can hit lower if you want to shoot further and you can hit higher if you need to jump from closer. A jump shot is it’s a pretty easy shot, actually, but it’s very different than a normal pool shot.

8 ball