Assume you have a cart with a mass m = 0.530 kg. The cart accelerates from rest to a final velocity of 2.1 m/s. 1. What is the net work done on the cart? 2. If the work is done over the displacement of 0.71 m, what is the average net force on the cart? 3. If there is an uncompensated frictional force fi = 0.11 N, what is the work done by friction over the same displacement