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How much work is done on a 3.0 kg book that is pushed across the top of a table to the other side until it stops? Its initial speed is 1.4 m's.

Respuesta :

Answer:

Work down = 2.94 N

Explanation:

Given:

Mass of book m = 3 kg

Initial speed v = 1.4 m/s

Find:

Work down w

Computation:

Work down = Kinetic energy

SO,

Work down = 1/2(m)(v)²

Work down = 1/2(3)(1.4)²

Work down = 2.94 N

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