Imagine that you are experimenting with two carts on an air track. Both carts have the same mass. You set cart A at rest on the track and slide cart B towards it with speed ( v ). Choose a possible outcome of the collision
a) Cart A moving forward with speed v/2, cart B moving backwards with speed (v).
b) Cart A at rest, cart B moving backwards with speed (v).
c) Cart A moving forwards with speed 2v, cart B moving forwards with speed (v).
d) Cart A moving forwards with speed (v), cart B at rest.