Starting from rest, a 2.0 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.36 N on it. This force does +2.5 10-4 J of work on the flea.

Question

Starting from rest, a 2.0  10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.36 N on it. This force does +2.5  10-4 J of work on the flea.
-How far does the flea move while it's pushing off?

Damon · Answer

work = force * distance in direction of force 2.5*10^-4 = .36 x x = 6.9*10^-4 meters