Question

A 30.0 kg object has an initial velocity of 7.00 m/s and a final velocity of 10.0 m/s. The work done on the object is
J. (Report the answer to three significant figures.)

Answer 1

Work = ΔK = 1/2 m (v_f^2 − v_i^2) = 0.5(30.0)(10.0^2 − 7.00^2) = 15.0(100 − 49.00) = 15.0(51.00) = 765 J.