Question

In a game of pool, when the cue ball (white ball) is stuck, it collides with the solid blue #2 ball, transferring all of its kinetic energy. What will happen after the collision?

(3 points)
Responses

The Blue Solid #2 ball will move away at half the speed because the kinetic energy is divided between the two balls.
The Blue Solid #2 ball will move away at half the speed because the kinetic energy is divided between the two balls.

The Blue Solid #2 ball will move away at the same speed because it has the same mass.
The Blue Solid #2 ball will move away at the same speed because it has the same mass.

The Blue Solid #2 ball will come to a stop, just like the white cue ball.
The Blue Solid #2 ball will come to a stop, just like the white cue ball.

The Blue Solid #2 ball will move away at half the speed because the kinetic energy is divided between the two balls.

Answer 1

The Blue Solid #2 ball will move away at the same speed because it has the same mass.

Explanation: For an elastic, head‑on collision between equal masses, the moving ball stops and the struck ball takes on the original velocity (momentum and kinetic energy are effectively transferred).