(a) You exert a constant force of 200 N on a friend on roller skates. If she...

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(a) You exert a constant force of 200 N on a friend on roller skates. If she starts from rest, estimate how far she moves in 2.0s.

(b) When a person jumps off a wall, what is the magnitude of his acceleration?

(c) Estimate the magnitude of the force exerted by Earth on the person during the jump in part b.

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