Blocks a and B Are Moving Toward Each Other

Multiple Choice

Blocks A and B are moving toward each other. 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 a completely inelastic collision. The kinetic energy lost during the collision is:

A) 0
B) 1250 J
C) 3750 J
D) 5000 J
E) 5600 J