Question 1
Figure 1 shows an athlete on starting blocks waiting to start a 100 metre race.
Complete the sentence. Choose the answer from the box.
The force from the athlete pushing backwards on the starting blocks is the force from the starting blocks pushing forwards on the athlete.
[1 mark]
Figure 2 shows a distance-time graph for the athlete from the moment the race starts.
Three parts of the distance-time graph are labelled J, K and L. Draw one line from each of the labels to the correct description of the athlete’s motion for that part of the graph.
[2 marks]
What distance does the athlete travel after the end of the race before stopping?
[1 mark]
Calculate the average speed of the athlete between the start and finish of the 100 metre race. Use the equation:
[2 marks]
The athlete runs faster than a typical person. What is the average running speed of a typical person in metres per second?
Tick (✓) one box.
[1 mark]