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The graph in Figure 3 shows how the velocity of a car changes with time - Edexcel - GCSE Physics Combined Science - Question 2 - 2023 - Paper 1
Question 2
The graph in Figure 3 shows how the velocity of a car changes with time. The car starts from rest and travels along a level, straight road for 50s. (i) Which part ... show full transcript
Worked Solution & Example Answer:The graph in Figure 3 shows how the velocity of a car changes with time - Edexcel - GCSE Physics Combined Science - Question 2 - 2023 - Paper 1
Step 1
Which part of the graph shows when the car has constant velocity?
Answer
The car has constant velocity when the graph is a horizontal line, indicating that the velocity remains unchanged over time. Looking at Figure 3, this occurs in the section QR, where the velocity is constant at 20 m/s.
Step 2
Which part of the graph shows when the car has the greatest acceleration?
Answer
The car has the greatest acceleration during the segments where the slope of the graph is steepest. In Figure 3, this occurs during the segment PQ, where the velocity rapidly increases from 0 m/s to 20 m/s in the shortest amount of time.