(a)[4]
Describe the energy changes that occur as the ball travels from the starting point to the stopping point.
(b)[2]
Describe how the conservation of energy principle explains why the stopping point is lower than the starting point.
Physics 0625 · IGCSE · Energy, work and power
Energy, work and power — practice question
A student explores how energy changes when a ball travels down a curved track. The student keeps the ball at the starting point on the curved track, as shown in Fig. 4.1. The ball is let go. It moves down the track, climbs the opposite side to the stopping point, and then rolls back down.