Physics, asked by nitukumari1748, 9 months ago

a force acting on a 20 kg mass changes it's velocity from 5 m/s to 2 m/s. what is the work done by the force​

Answers

Answered by IamIronMan0
0

Answer:

Work done will be equal to change in kinetic energy

 w    \\ =  \frac{1}{2}  \times 20 \times  {2}^{2}  -  \frac{1}{2}  \times 20 \times   {5}^{2}  \\ \\   =10(4 - 25) \\  =  - 210 \: j

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