A 28.8 kilogram cart is released down a 108 meter long, frictionless ramp inclined at an angle of 10.5o. Explain the forces acting on the cart, with magnitudes and directions, and find how long it will take the cart to reach the end of the ramp and its speed at that point.
If the cart in the above question is replaced with a 28.8 kilogram box and, if after an initial push, the cart is found to be sliding down the ramp at a constant 1.98 m/s, find the coefficient of friction between the box and the surface of the incline.