(a(i))[3]
From Fig. 9.1 and its scale, work out the displacement for the journey from A to B.
(a(ii))[1]
State the difference between distance and displacement.
(a(iii))[2]
In some parts of the trip, the car keeps a constant speed but is still accelerating. Explain why this can happen.
(b(i))[1]
Describe what the thinking distance means.
(b(ii))[2]
The car’s brakes work poorly. This makes the braking distance longer. State two other factors that increase the braking distance.
(c(i))[3]
Calculate the kinetic energy of the car and driver immediately before the brakes are applied.
(c(ii))[2]
Calculate the car’s deceleration.
(c(iii))[1]
Explain why the temperature of the brakes rises while the car is braking.