(a)[2]
An object moves in a straight line at constant speed, then a force acts on it. State the possible changes in the motion of the object.
(b(i))[2]
The skier begins from rest and accelerates at a constant rate. He reaches a speed of 60 m/s in 16 s. Calculate the skier’s acceleration.
(b(ii))[2]
Calculate the skier’s average speed over the section.
(b(iii))[2]
Suggest why the skier bends his body in Fig. 1.1, and explain your answer.