While leaning out a window that is 5.70 m above the ground, you drop a 0.600-kg basketball to a friend at ground level. your friend catches the ball at a height of 2.00 m above the ground. determine the following.
(a) the amount of work done by the force of gravity on the ball
(b) the gravitational potential energy of the ball-earth system, relative to the ground when it is released
(c) the gravitational potential energy of the ball-earth system, relative to the ground when it is caught
(d) the ratio of the change (pef − pe0) in the gravitational potential energy of the ball-earth system to the work done on the ball by the force of gravity