Question

while rowing in a race, john uses his arms to exert a force of 165 N per stroke while pulling the .80 m. how much work does he do in 30 stroke?

Answer 1

W=165*30*0.8=3960J

Answer 2

A mechanic uses a hydraulic lift to raise a 1200kg car 0.5m off the ground how much work does the lift do on the car?