A trolley moves along a horizontal track - Junior Cycle Science - Question 7 - 2022
Question 7
A trolley moves along a horizontal track. The distance of the trolley from its starting point was measured every second for 8 seconds. The results are shown in the g... show full transcript
Worked Solution & Example Answer:A trolley moves along a horizontal track - Junior Cycle Science - Question 7 - 2022
Step 1
Calculate the average speed of the trolley. Include the unit for your answer.
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Answer
To calculate the average speed, we use the formula:
Thus, the average speed of the trolley is 0.15 m/s.
Step 2
Write a suitable hypothesis for this second investigation.
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Answer
Hypothesis: The average speed of the trolley will increase when the track is sloped compared to when it is horizontal.
Step 3
Describe one thing the student should have done to allow a fair comparison.
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The student should use the same trolley or the same mass of trolley for both investigations to ensure consistency in the experimental conditions.
Step 4
On the graph above, sketch the expected result for your hypothesis.
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On the graph, one should sketch a line that starts at the origin and has a steeper slope compared to the original linear graph, indicating that the trolley travels a greater distance over the same time when the track is sloped.
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