Q1. A ball is held on an incline at the height of 72 cm. it is then released so that the ball rolls down the incline. At the bottom of the incline there is a loop where the ball rolls around in. If the loop is 62 cm high at its highest point what is the speed of the ball at the point.
Q2. Suppose that you exert 500 N horizontally on a 70 kg crate on a factory floor, when friction between the crate and the floor is 200 N. What is the acceleration of crate?