A toy car is given a quick push so that it moves on an inclined ramp. After it is released, it moves up, reaches its highest point and moves back down again. Friction is so small it can be ignored. What net force acts on the car?

A. net force of zero
B. Net constant force up the ramp
C. net increasing force up the ramp
D. net increasing force down the ramp
E. net constant force down the ramp
F. net decreasing force down the ramp
G. net decreasing force up the ramp

Would it be choice C, E or F?

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  1. m g sin (ramp angle) is constant down the ramp so E

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