A 10-Kg Object Moving in a Certain Direction Has a Kinetic

Multiple Choice

A 1.0-kg object moving in a certain direction has a kinetic energy of 2.0 J. It hits a wall and comes back with half its original speed. What is the kinetic energy of this object at this point?

A) 0.25 J
B) 0.50 J
C) 1.0 J
D) 2.0 J
E) 4.0 J