A ball of mass, m is thrown straight up and rises h after
leaving your hand, it momentarily stops. Acceleration due to
gravity g is downward. Ignore air resistance.
Part A (5 points): If the ball is the system, and the Earth is
the surroundings, what is the change in potential energy, ΔUsys of
the system, and what is the work done, Wsurr by the surroundings
?
Δ Usys = 0; Wsurr = -mgh
Δ Usys = mgh; Wsurr =...