Question

The speed of a car is 72 km express it in m/s

Answer 1

Hey mate...........

It would be 72 * (5/18) = 20 m/s

Answer 2

$\frac{72 \times 1000}{60 \times 60} \\ = \frac{72000}{3600} \\ = 20m {s}^{ - 1}$