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Velocity-time graph of a particle of mas...

Velocity-time graph of a particle of mass (2 kg) moving in a straight line is as shown in Fig. 9.20. Find the word done by all the forces acting on the particle. .

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The correct Answer is:
B
Work done = changed in KE `" " = 1/2 (2)[(0)^2 - (20)^2] = -400 J`.
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