Question

The speed of
a bus rs 72km/hr. Convert it into
si system dimensionally
​

Answer 1

Speed = 20 m/s

Step-by-step explanation:

The speed of a bus is 72 km/h

The SI unit of speed is m/s

We need to convert it into m/s

We know that,

1 km = 1000 m

1 h = 3600 s

It means,

`s=72\ (km)/(h)\\\\=(72* 1000\ m)/(3600\ s)\\\\=20\ m/s`

So, the speed of the bus is 20 m/s.