question archive A construction laborer holds a 20 kilogram sheet of wallboard 3 meters above the floor for 4 seconds
A construction laborer holds a 20 kilogram sheet of wallboard 3 meters above the floor for 4 seconds
Subject:PhysicsPrice: Bought3
A construction laborer holds a 20 kilogram sheet of wallboard 3 meters above the floor for 4 seconds.
During these 4 seconds how much power was expended on the wallboard? a. 2400 watts F = 200 N b. 320
watts c. 27 watts Ax = 3 m d. 15 watts e. None of these
