Convert 72 km/h into m/s.
20 m/s
40 m/s
10 m/s
60 m/s
We know that akm/h =$\left(a \times \frac{5}{18}\right){m} / s$ $\therefore \quad 72 km / h=\left(72 \times \frac{5}{18}\right) m / s=20 m / s$
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