Question

certain force acting on a 20kg mass change its velocity from 5 M per second to 2 metre per second calculate the work done by the force

Answer 1

Work done is 210J.

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Answer 2

Answer:Mass, m=20kgFinal velocity, v=5m/sInitial velocity, u=2m/sWork, w=1/2m(v^2-u^2) 1/2×20(25-4) Work, w=210J

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