Question

Change the speed of 6m/s into km/h.

Answer 1

For changing the speed from m/s to km/h we just have to multiply the number with $\frac{18}{5}$

So,

Here speed given is 6 m/s

To convert it into km/h = $6\times \frac{18}{5}=21.6$ km/h

Hence the correct answer is 21.6 km/h