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in Physics by (70.7k points)

A body of mass 2kg travels according to the law x(t) = pt + qt2 + rt3 where p = 3ms–1 , q = 4ms–2 and r = 5 ms–3 . The force acting on the body at t = 2 seconds is 

(A) 136 N 

(B) 134 N 

(C) 158 N 

(D) 68 N

1 Answer

+1 vote
by (71.5k points)
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Best answer

Correct option (A) 136 N

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