The Cub Scouts are having their annual Pinewood Derby Race. The unpowered soap box racers, like the one shown below, are lined up at the top of a hill and ready to begin
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What gives the cars their potential energy?
OA
their wheels
OB. gravity
their speed

your answer is, orbit around the nucleus

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

490 n

f=125n a=2.5m/s2