A80 kg box begins at rest on the ground. The coefficient of static friction between the box and ground is 0.60 and the coefficient of kinetic friction is 0.30. At t= 0.0 s, a horizontal force of 50.0 N[forward) is applied on the box. This applied force is removed at t=4.0 s. Determine the velocity of the box at t= 5.0 s.

A80 kg box begins at rest on the ground. The coefficient of static friction between the box and ground is 0.60 and the coefficient of kinetic friction is 0.30. At t= 0.0 s, a horizontal force of 50.0 N[forward) is applied on the box. This applied force is removed at t=4.0 s. Determine the velocity of the box at t= 5.0 s.