A 15kg block is initially moving along a smooth horizontal surface with a speed of `v=4m//s` to the left. It is acted by a force `F` , which varies in the manner shown. Determine the velocity of the block at `t=15` seconds.

A block is dragged on smooth plane with the help of a rope which moves with velocity v. the horizontal velocity of the block is

A block is dragged on a smooth plane with the help of a rope which moves with a velocity v as shown in figure. The horizontal velocity of the block is :

A 20 kg block is originally at rest on a horizontal surface for which the coefficient of friction is 0.6 . A horizontal force F is applied such that it varies with time as shown in the figure (a) & (b). If the speed of the block after 10 s is 8v then find v . ( Take g=10m//s^(2) )

A block of mass 5 kg is initially at rest on a rough horizontal surface. A force of 45 N acts over a distance of 2 m . The force of friction acting on the block is 25 N . The final kinetic energy of the block is

The 10 kg block is moving to the left with a speed of 1.2 m//s at time t = 0 A force F is applied kinetic friction is mu_(k) = 0.2 . Determine the time t at which the block comes to a slip. (g = 10 m//s^(2))

A block of mass 10 kg is moving horizontally with a speed of 1.5 ms^(-1) on a smooth plane. If a constant vertical force 10N acts on it, the displacement of the block from the point of application of the force at the end of 4 second is