Starting from rest, a 1.8 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.37 N on it. This force does +2.6 10-4 J of work on the flea.
(a) What is the flea's speed when it leaves the ground?
m/s
(b) How far upward does the flea move while it is pushing off? Ignore both air resistance and the flea's weight.
m