11-12-2020
Physics

contestada

Work is NOT done by a person when she?
pulls a sled across the ice covered backyard
lifts a book up off a desk
pushes on a desk to move it 3 m forward
pushes on a building

Respuesta :

journeysmithf journeysmithf

11-12-2020

Answer:

I think it is pulling the sled off the ice covered back yard.

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