s10029564 s10029564

07-11-2019
Physics

contestada

a 45kg box of books is lifted o a bookself 1.75 m above the floor. how much work was done to lift the books?

Respuesta :

MathPhys MathPhys

07-11-2019

Answer:

770 J

Explanation:

W = PE

W = mgh

W = (45 kg) (9.8 m/s²) (1.75 m)

W = 770 J

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