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W = Force x Distance W = (100N) x (0.05 meters - (-0.02 meters)) = 7 Joules I think that's what the question is looking for but I might be wrong....:p

A fish swimming in a horizontal plane has velocity vi = (4.00 i - 1.00 j) m/s at a point in the ocean where the position relative to a certain rock is ri = (10.0 i - 4.00 j) m. After the fish swims with constant acceleration for 20.0 s, its velocity is v = (20.0 i - 5.00 j) m/s. (c) If the fish...