1.

The linear momentum p of a body moving in one dimension varies with time according to the equation \[p=a+b{{t}^{2}}\], where a and b are positive constants. The net force acting on the body is                             [MP PMT 1993]

A.             Proportional to \[{{t}^{2}}\]
B.             A constant
C.             Proportional to t
D.             Inversely proportional to t
Answer» D.             Inversely proportional to t


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