A box is on a ramp tilted at an angle of 40 ∘ with the horizontal. The box has a mass of 12 kg and slides down the ramp starting from a height of 1.3 meters ( v down the ramp is initially equal to zero at that point). The coefficient of friction between the box and the ramp is 0.15 for kinetic conditions. Draw a free-body diagram showing all forces acting on the object. What is the acceleration of the box as it slides down the ramp? You should check to make sure that the box can move.