Speed, velocity and acceleration Quiz
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5 questions, one answer each
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1. A cyclist travels 90 m in 15 s. What is her average speed?
- A. 1.5 m/s
- B. 6 m/s
- C. 105 m/s
- D. 1350 m/s
2. A car speeds up from 5 m/s to 25 m/s in 10 s. What is its acceleration?
- A. 3 m/s²
- B. 0.5 m/s²
- C. 2 m/s²
- D. 30 m/s²
3. A ball is dropped from rest. Ignoring air resistance, what is its acceleration?
- A. 10 m/s²
- B. 1 m/s²
- C. 100 m/s²
- D. 0 m/s²
4. Which of these is a velocity?
- A. 30 m/s
- B. 30 km
- C. 30 m/s²
- D. 30 m/s due north
5. Why does a braking car have a negative acceleration?
- A. It is moving backwards
- B. Its speed is decreasing, so v − u is negative
- C. Its mass decreases
- D. It has stopped