A car is travelling at 10 m/s - Edexcel - GCSE Physics - Question 5 - 2021 - Paper 1
Question 5
A car is travelling at 10 m/s.
The driver sees a danger and stops the car.
(i) The stopping distance for the car would be smaller if the car
A had more passengers
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Worked Solution & Example Answer:A car is travelling at 10 m/s - Edexcel - GCSE Physics - Question 5 - 2021 - Paper 1
Step 1
The stopping distance for the car would be smaller if the car
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Answer
The correct answer is D: was travelling more slowly. When a car travels at a slower speed, its stopping distance decreases due to reduced kinetic energy, which allows the car to come to a stop more quickly.
Step 2
Use the graph to find the driver’s reaction time.
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Answer
To find the driver's reaction time from the speed-time graph, identify the time interval during which the speed remains constant at 10 m/s before it starts to decrease. From the graph, this occurs at the beginning and lasts until approximately 0.5 seconds. Therefore, the driver's reaction time is approximately 0.5 seconds.
