(a(i))[1]
As the rubber band is drawn back, the work done is changed into [BLANK] potential energy.
(a(ii))[2]
When the student releases the rubber band, the ball travels forwards horizontally. The stored [BLANK] potential energy is changed into [BLANK] energy.
(a(iii))[2]
As the ball moves through the air, friction with air molecules acts on it. This makes some of the ball’s [BLANK] energy change into [BLANK] energy.
(b)[1]
Describe how the student can raise the energy of the ball while still using the same catapult.