Question

A 10.0 kg mass traveling east at 16.0 m/s undergoes a head-on elastic collision with a 14.0 kg mass traveling west at 12.0 m/s. Determine the speed a:
A) 3.6 m/s
B) 5.2 m/s
C) 7.4 m/s
D) 9.8 m/s