Question

A car is moving with a speed of 90km/hr. what is it speed in m/s?

Answer 1

`25m"/"s`

Explanation:

`90km"/"hr`

`=90000m"/"3600s`

`=25m"/"s`

A trick to use is to know that `1m"/"s=3.6km"/"h`.

To convert between m/s to km/h, multiply by `3.6`, and to convert vice-versa, divide by `3.6`.