A block of mass 50 kg is resting on the horizontal surface is acted upon by a force F which varies as shown in Fig. 16.E21. If the coefficient of friction between the block and the surface is 0.2,...

A block of mass 50 kg is resting on the horizontal surface is acted upon by a force F which varies as shown in Fig. 16.E21. If the coefficient of friction between the block and the surface is 0.2, find the velocity of the block at t = 5 s and 10 s. Also determine the time when the block will come to rest.