Fig. 9.1 shows a map of the route taken by a car as it travels from town A to town B. The journey involves a distance and a displacement. [Figure 9.1]

1. (a)(i)Using the scale on Fig. 9.1, determine the displacement in travelling from A to B.[3]
2. (a)(ii)State how distance differs from displacement.[1]
3. (a)(iii)In some parts of the journey, the car is travelling at a constant speed but is also accelerating. Explain how this is possible.[2]
4. (b)(i)At town B the car makes an emergency stop. The total stopping distance of the car is the thinking distance added to the braking distance. Describe what is meant by the thinking distance.[1]
5. (b)(ii)The brakes on the car work badly. This increases the braking distance. State two other factors that increase the braking distance. 1. 2.[2]
6. (c)(i)The mass of the car and driver is 1200kg. Just before the brakes are applied, the speed of the car is 30m/s. Calculate the kinetic energy of the car and driver just before the brakes are applied.[3]
7. (c)(ii)The braking force that stops the car is 1800N. Calculate the deceleration of the car.[2]
8. (c)(iii)Explain why the temperature of the brakes increases during braking.[1]

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