Answers to AQA GCSE Distance-time graphs(physics)

Practice Questions

1.How can you find the speed of an object using a distance time graph

The gradient of the distance time graph is the speed. 

2. Analyse the distance time graph below and answer the following questions. 

Distance time graph showing the journey of an object.

A car was driven a short distance then stopped for a brief period, before driving for a further distance to complete its journey. Use the distance time graph above to answer the following questions

2a. How far did the car travel in the first 2 seconds

50m

2b. How long was the car stationary for

7 seconds – 2 seconds = 5 seconds

2c. During which time period was the car moving at the fastest speed?

0-2 seconds as the gradient has the steepest line

2d. Calculate the speed of the car between 0 to 2 seconds

50m/2seconds = 25m/s

2e. Calculate the speed of the car between 7 to 13 seconds.

Total distance travelled = 70m-50m =20m

Total time period = 13 seconds – 7 seconds = 6 seconds

Speed = 20m/6 seconds = 3.3 m/s

Speed = 3m/s

 

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