# Cue ball at rest on a frictionless table

1. Nov 29, 2007

### rabid_baboon

A cue ball (mass=0.165kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.50Ns (Newton-seconds) to the ball. The ball the slides along the table and makes an elastic head-on collision with a second ball of equal mass that is initially at rest. Find the velocity of the second ball just after it is struck.

I need help at least getting started.

2. Nov 29, 2007

### Bill Foster

$$Ft=mv$$