A 0.113 kg billiard ball moving at 1.54 m/s strikes a second billiard ball of the same mass moving in the opposite direction at 0.46 m/s. The second billiard ball rebounds and travels at 0.72 m/s after the head on collision. Determine the post-collision velocity of the first billiard ball. a
0.36
b
0.60
c
.8741
d
60.0