Question

Certain force acting on a body changes its velocity from 5 m/s to 2 m/s. Calculate the work done by the force​

Answer 1

Answer:

Answer: -210 joules.

Explanation: Work done by a given force = change in kinetic energy.

Given : Mass of the object = 20 kg. Initial velocity of the object = u = 5 m/s. Final velocity of the object = v = 2 m/s.

To find : Work done by the force. Work done by the force = ½mv²-½mu²

Explanation:

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