Power applied to a particle varies with time as P = [3t 2 – 2t + 1] watts. Where t is time in seconds. Then the change in kinetic energy of particle between time t = 2s to t = 4s is –
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Verified by ExpertsThe correct answer is:
A
K = 
= [t 3 – t 2 + t] 2 4 = 46J
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