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A small truck has a mass of 2125 kg. How much work is required to decrease...

A small truck has a mass of 2125 kg. How much work is required to decrease the speed of the vehicle from 21.0 m/s to 11.0 m/s on a level road? work required to decrease speed:

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Answer #1

Work, W = 0.5 m(v2^2 - v1^2)

W = 0.5 x 2125 x (11^2 - 21^2) = - 340000 J

(negative sign indicates deceleration)

Comment in case any doubt please rate my answer ..

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