Question

in a game of pool, when one ball hits another and sets it into motion, this is an example of a/an ____ collision.

Explanation:

In pool, when one ball hits another and transfers momentum (setting the second in motion), it's an elastic collision (approximate, as pool balls have minimal energy loss in ideal cases, and elastic collisions involve momentum and kinetic energy transfer with little loss, fitting the scenario of one ball moving another).

Answer:

elastic