Question

5. A cue ball with mass m = 0.25 kg moves with a velocity v = 66 m/s. It strikes a stationary eight ball (mass = 0.25 kg) and

projects it into a comer pocket. At what speed does the eight ball leave the collision?

Answer 1

66 m/s

Explanation:

Since momentum of the body is conserved

mv=mv

0.25 kg×66m/s=0.25 kg×v

v =0.25kg×66m/s

0.25 kg

v =66m/s