PH-384
Speed and velocity
Physics · Secondary 3 · Medium · Speed and velocity
A cyclist travels 900 m in 60 s, then immediately another 300 m in 20 s. What is his average speed for the whole 80 s?
- 15 m s⁻¹
- 12 m s⁻¹
- 10 m s⁻¹
- 7.5 m s⁻¹
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