When a flea ( m = 600 μg ) is jumping up, it extends its legs 0.5 mm and reaches a speed of 0.40 m/s in that time. Part A How much work did the flea do during that time? Use g = 10 m/ s 2 How much work did the flea do during that time? Use = 10 3.0×10−6 J 5.1×10−5 J 5.1×10−2 J 4.8×10−5 J