Blocks a and B Are Moving Toward Each Other Along

Multiple Choice

Blocks A and B are moving toward each other along the x axis. A has a mass of 2.0 kg and a velocity of 50 m/s, while B has a mass of 4.0 kg and a velocity of -25 m/s. They suffer an elastic collision and move off along the x axis. The kinetic energy transferred from A to B during the collision is:

A) 0
B) 2500 J
C) 5000 J
D) 7500 J
E) 10000 J