Billiard balls collide quite elastically. Ideally,
the total change in momentum is zero.
The momentum stays the same.
The momentum stays the same.
Conservation of momentum.
They have identical momentum before the collision . The total momentum will the the same before and after the collision. When the balls collide they will bounce apart both with same force and so the same momentum as originally - but in opposite directions. This assumes no energy loss in an ideal elastic collision.
yes
The momentum stays the same.
The momentum stays the same.
Conservation of momentum.
When two balls collide, energy is transferred into sound and deformation, but momentum remains the same. The mass times velocity of the balls is constant.
They have identical momentum before the collision . The total momentum will the the same before and after the collision. When the balls collide they will bounce apart both with same force and so the same momentum as originally - but in opposite directions. This assumes no energy loss in an ideal elastic collision.
momentum and inertia EDIT: friction between the surface of the pool table and the pool balls causes the balls to lose their momentum.
All pool balls are quiet until they collide with another ball. This happens only for a very brief fraction of a second during the typical pool shot. Pool balls cannot be made of any other material that will change the sound they make on impact, so they cannot be quieter than they already are.
16 balls
If no rotational momentum is present as well, only a tiny fraction of which can be transferred to another billiard ball, the cue ball will stop. If rotational momentum is present, which is a part of cue ball control, the cue ball will roll in a direction dependent upon angle of contact and direction of rotation.
yes
They have identical momentum before the collision . The total momentum will the the same before and after the collision. When the balls collide they will bounce apart both with same force and so the same momentum as originally - but in opposite directions. This assumes no energy loss in an ideal elastic collision.
Of an elastic collision