A softball of mass 0.220 kg that is moving with a speed of4.5 m/s (in the positive direction)collides head-on and elastically with another ball initially atrest. Afterward the incoming softball bounces backward with a speedof 2.4 m/s.
(a) Calculate the velocity of the target ball after the collision.
m/s
(b) Calculate the mass of the target ball.
kg