(a(i))[2]
On Fig. 1.2, label: • P at one position where the ball is accelerating • Q at one position where the ball is moving at constant speed.
(a(ii))[3]
Find the speed of the ball at point X on Fig. 1.2. Show your calculation.
(b)[1]
The speeds of the ball at A, B, C and D are $v_A$, $v_B$, $v_C$ and $v_D$ respectively. Put these four speeds in order from the smallest to the largest.
(c)[3]
Work is carried out to transfer energy between energy stores while the ball moves from A to B. State the force responsible for the work done and describe the energy transfer.
(d)[1]
Since the track at point B is circular, draw an arrow on Fig. 1.1 to indicate the direction of the resultant force on the ball at point B.