a. Name an instrument that could be used to measure the time taken for the journey. b. Calculate the average speed of the cyclist as he travelled from point A to point B. c. Describe the cyclist’s motion between points B and C of his journey.
d. The cyclist’s speed as he travelled from point A to point B was less than his speed as he travelled from point C to point D. What evidence is there in the graph to support this?
e. Describe what the cyclist did at point D. 2. Final Examination 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 graph below.
0.3 0.6 0.9 1.2 1.5
0 1 :Fig. 27.22
a. Calculate the average speed of the trolley. Include the unit for your answer. The student carried out a second distance-time investigation when the track was sloped.
2 4 5 6 Time (s)
3 7 8
:Fig. 27.23
b. Write a suitable hypothesis for this second investigation. c. The student wanted to be able to make a fair comparison between the two investigations. Describe one thing the student should have done to allow a fair comparison. d. On the graph above, sketch the expected result for your hypothesis.
j Go to page 140 of your Assessment Book to answer more exam-style questions. Elements of Science 273