Two qualitative energy-bar charts for a ball at moments 1 and 2 each display only a…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Two qualitative energy-bar charts for a ball at moments 1 and 2 each display only a kinetic-energy (KE) bar and a gravitational potential-energy (PE) bar. The total height of the KE + PE bars is the same in both charts. Which quantity is most directly indicated to be conserved between the two moments?
(a) The momentum of the ball
(b) The mechanical energy of the ball–Earth system
(c) The kinetic energy of the ball
(d) The gravitational potential energy of the ball