A 7.93 kg box is pulled along a horizontal surface by a force of 84.0 N applied at a angle. If the coefficient of kinetic friction is 0.35, what is the acceleration of the box?
The free-body diagram of the box
Solve for the normal force
Solve for the friction force
Solve for the acceleration in the horizontal direction
Therefore, the acceleration of the box is 6.51 m/s2 along the horizontal surface.