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 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 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 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 10 kg is moving on a rough horizontal surface as shown in figure. At t=0 , velocity of block is 10 m/s towards left and a constant force F= 10 N acts horizontally towards right. Acceleration of the block at t=3s is ( g= 10 m s^(-2) )

A block of mass M is kept on a smooth horizontal surface. Another block of mass m, moving with velocity v, collides with it and coalesces. What is the resultant velocity of the system?