In: Physics
How much work did the movers do to push a 47.0 kg crate 10.2 m across a rough floor at a speed of 2.2 m/s with a horizontal pushing force of 58 N ?
Work W = F.S , work done by all force = chang in its kinetic energy W = KE + (FS) W = 1/2 M V2+FS W = (1/2).47.(2.2)2+ 58.(10.2) = 705.34 J