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The table below shows the distances travelled by two athletes, Orla and Molly, during a 100 metre race - Junior Cycle Science - Question a - 2018
Question a
The table below shows the distances travelled by two athletes, Orla and Molly, during a 100 metre race. Distance (m) 20.0 40.0 60.0 80.0 100.0 Orla’s time (... show full transcript
Worked Solution & Example Answer:The table below shows the distances travelled by two athletes, Orla and Molly, during a 100 metre race - Junior Cycle Science - Question a - 2018
Step 1
Draw graphs in the grid below showing distance versus time for Orla and for Molly.
Answer
To plot the graphs for Orla and Molly, first, we will mark the points from the provided data:
-
For Orla:
- (4.0 s, 20.0 m)
- (8.0 s, 40.0 m)
- (12.0 s, 60.0 m)
- (16.0 s, 80.0 m)
- (20.0 s, 100.0 m)
-
For Molly:
- (4.0 s, 20.0 m)
- (8.0 s, 40.0 m)
- (11.2 s, 60.0 m)
- (14.4 s, 80.0 m)
- (17.6 s, 100.0 m)
These points can be plotted on the graph with time on the x-axis and distance on the y-axis. Each athlete's distance-time data should be connected with straight lines to indicate their progress throughout the race.
Step 2
Step 3
Which athlete, Orla or Molly, had a constant speed throughout the race?
Answer
Orla had a constant speed throughout the race. This is indicated by her distance-time graph, which forms a straight line. This means that the speed is uniform at every moment during the race. In contrast, Molly's graph is not a straight line; hence her speed varied throughout the race.