A Block Is Launched Up an Incline Plane

Multiple Choice

A block is launched up an incline plane.After going up the plane,it slides back down to its starting position.The coefficient of friction between the block and the plane is 0.3.The time for the trip up the plane:

A) is the same as the time for the trip down.
B) is more than the time for the trip down.
C) is less than the time for the trip down.
D) cannot be found without knowing the angle of inclination.