Power applied to a particle varices with...

Power applied to a particle varices with time as `P =(3t^(2)-2t + 1)` watt, where t is in second. Find the change in its kinetic energy between time `t=2s` and `t = 4 s` .

A

46 J

B

50 J

C

26 J

D

12 J

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The correct Answer is:

A

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