vanillagorilla2733 vanillagorilla2733

20-09-2018
Biology

contestada

A 20 kg box has been lifted 0.7m. How much work has been done?

Respuesta :

alexandre60 alexandre60

20-09-2018

The work done is 137 joules.

Lifting opposes the acceleration of gravity, which is 9.8 m/sec/sec.

20 x 0.7 x 9.8 = 137 J (kg-m2/sec2)

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