PH-1662

Speed and velocity

Physics · Secondary 4 · Medium · Speed and velocity

1. $3.1\,\text{m s}^{-1}$
2. $4.0\,\text{m s}^{-1}$
3. $5.0\,\text{m s}^{-1}$
4. $7.0\,\text{m s}^{-1}$

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