A very massive object traveling at 100 m/s in the -z direction strikes a very light object that is initially at rest. If the collision is totally elastic, what is the velocity of the light object?
Choose one answer.
a. 50 m/s in the +z direction
b. 100 m/s in the +z direction
c. 200 m/s in the +z direction
d. 100 m/s in the -z direction
e. 200 m/s in the -z direction