Figure 1 shows a speed/time graph for a car - Edexcel - GCSE Physics Combined Science - Question 1 - 2019 - Paper 1
Question 1
Figure 1 shows a speed/time graph for a car.
(i) The graph in Figure 1 is divided into four parts, P, Q, R, and S. Draw a line from the letter for each part to the ... show full transcript
Worked Solution & Example Answer:Figure 1 shows a speed/time graph for a car - Edexcel - GCSE Physics Combined Science - Question 1 - 2019 - Paper 1
Step 1
Draw a line from the letter for each part to the correct description of the motion during that part.
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Answer
P → the car is standing still
Q → the car is accelerating
R → the car is decelerating
S → the car is travelling at constant speed
Step 2
State the letters of the two parts of the graph where the horizontal forces acting on the car are balanced.
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Answer
Q and S
Step 3
Calculate the distance travelled by the car in part Q. Use the equation distance travelled = average speed × time.
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Answer
To find the distance travelled in part Q, we use the average speed and time.
Average speed in part Q = 30 m/s
Time in part Q = 100 s
