Question

In: Physics

How much work did the movers do to push a 47.0 kg crate 10.2 m across...

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 ?

Solutions

Expert Solution

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


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