A body o fmass 6 kg moves in a staight line according to the equation x=`t^(3)-75t`, where x denotes the distance in metre and t the time in second. The force on the body at t=4s is

A particle moves in x-y plane according to the equations x= 4t^2+ 5t+ 16 and y=5t where x, y are in metre and t is in second. The acceleration of the particle is

A particle moves in x-y plane according to the equations x= 4t^2+ 5t+ 16 and y=5t where x, y are in metre and t is in second. The acceleration of the particle is

A body of mass 5kg moves according to the relation x=t^(2)+2t^(3) .The power used by the body at t=2s is?

A body of mass 10 kg moves according to the relation x = t^(2) + 2t^(3) . The work done by the force in the first 2s is.

A particle moves along a straight line such that its position x at any time t is x=3t^(2)-t^(3) , where x is in metre and t in second the

The relation between the displacement x and the time t for a body of mass 2 kg moving under the action of a force is geven by x=t^(3)//3 , where x is in metre and t in second ,Calculate the ork done by the body in first 2 seconds.

The relation between the displaement x and the time t for a body of mass 2 kg moving under the action of a force is given by x=t^3//3 , where x is in metre and t in second . Calculate the work done by the body in the first 2 seconds .

The velocity v of a body moving along a straight line varies with time t as v=2t^(2)e^(-t) , where v is in m/s and t is in second. The acceleration of body is zero at t =