Speed and Motion Investigation
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Speed and Motion Investigation
A. Read the results
The team repeated each test three times. They changed only the ramp height. The trolley, ramp surface and 2.4 m travel distance stayed the same.
Ramp height
Trial 1 (s)
Trial 2 (s)
Trial 3 (s)
Mean time (s)
10 cm
2.5
2.4
2.6
2.5
20 cm
1.8
1.7
1.9
1.8
30 cm
1.3
1.2
1.3
1.3
- Mean time increased, so speed decreased.
- Mean time decreased, so speed increased.
- Mean time stayed the same, so speed stayed the same.
- The distance increased, so speed decreased.
B. Explain the science
Use evidence from the setup and results to explain what is happening.
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