A billiard player hits a cue ball of mass m=0.170 kg that was initially at rest with the cue stick. The force exerted on the ball during the impact is shown in the following graph. Assume that the friction between the table and the ball is negligible. a) Calculate the speed of the cue ball right after the impact. b) If this cue ball has a head-on collision with another billiard ball of mass m=0.160 kg, what will be the final velocities of the two balls right after the collision? Assume that the collision is elastic. F(N) 1.70 ^ 0.500 t(s)