Motion along a straight line Quiz
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5 questions, one answer each
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1. A runner completes one 400 m lap in 50 s and returns to the start. What are the average speed and the average velocity?
- A. 8.0 m s⁻¹ and 8.0 m s⁻¹
- B. 8.0 m s⁻¹ and 0
- C. 0 and 8.0 m s⁻¹
- D. 0 and 0
2. A car accelerates uniformly from 8.0 m s⁻¹ to 20 m s⁻¹ in 6.0 s. What distance does it travel?
- A. 48 m
- B. 72 m
- C. 120 m
- D. 84 m
3. What does the gradient of a displacement–time graph give?
- A. Velocity
- B. Acceleration
- C. Displacement
- D. Total distance
4. A ball is thrown vertically upwards at 15 m s⁻¹. Ignoring air resistance, what is its maximum height?
- A. 1.5 m
- B. 5.7 m
- C. 11.5 m
- D. 23 m
5. In a free-fall experiment a student plots h on the y-axis against t² on the x-axis for objects dropped from rest. What is the gradient?
- A. g
- B. g/2
- C. 2/g
- D. 2g