A body of mass 2kg travels according to the law x(t ) = pt + qt2 + rt3 – InterviewSolution

1.	A body of mass 2kg travels according to the law x(t ) = pt + qt2 + rt3 where p = 3ms-1, q = 4ms-2 and r = 5ms-3 .The force acting on the body at t = 2 seconds is(a) 136 N(b) 134 N(c) 158 N(d) 68 N
Answer» The force acting on the body at t = 2 seconds is - (a) 136 N

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