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GCSE Questions: Forces

Q25. The table below shows thinking, braking and stopping distances for the same car travelling at different speeds.

Speed (m/s)
Thinking distance (m)
Braking distance (m)
Stopping distance (m)
8
6
6
12
16
12
24
36
32
24
96
120

 

(a) Describe how the thinking distance changes when the speed doubles.

Use data from the table in your answer.

[1 mark]

(b) Calculate the reaction time (in seconds) of the person driving the car.

[3 marks]

(c) Explain why the stopping distances are different for each speed shown in the above table.

[6 marks]

[10 Marks TOTAL]