Starting from rest, a 1.9x10-4 kg flea springs straightupward. while the flea is pushing off from the ground, the groundexerts an average upward force of 0.41 n on it. this force does1.8x10-4 j of work on the flea. (a)what is the flea's speed when it leaves the ground? (b) how far upward does the flea move while it ispushing off? ignore both air resistance and the flea's weight.

0.97332 m/s

0.00043 m

Explanation:

u = Initial velocity

v = Final velocity

m = Mass of flea

Change in Kinetic Energy

The velocity of the flea when leaving the ground is 0.97332 m/s

Work done is given by

The flea will travel 0.00043 m upward

answer; /// the above statement is (true);

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