PH-379

Speed and velocity

Physics · Secondary 3 · Medium · Speed and velocity

1. $4.2\,\text{m s}^{-1}$
2. $7.5\,\text{m s}^{-1}$
3. $0.75\,\text{m s}^{-1}$
4. $15\,\text{m s}^{-1}$

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