A 400 Kg Object Is Moving at 5

Multiple Choice

A 4.00 kg object is moving at 5.00 m/s EAST. It strikes a 5.00 kg that is moving WEST at 2.00 m/s. The objects collide elastically and move away in the EAST-WEST direction. The velocity of the 5.00 kg object after the collision is

A) 4.22 m/s EAST.
B) 2.78 m/s WEST.
C) 4.22 m/s WEST.
D) 2.78 m/s EAST.
E) 1.11 m/s WEST.