Question

The speed of a car is 20km/h. convert to its SI unit.

Answer 1

Answer:

The answer is 72.

Explanation:

thank you.

Answer 2

Answer:

Step-by-step explanation:

Speed is the distance travelled per unit time .

Speed = Distance/Time

•Speed is scalar quantity

V = D/T

Units of speed are :-

SI unit: m/s, m s−1

Dimension: L T^-1

Given,

A car covers the distance of 20km in 20 minutes

We have ,

Distance travelled (d) = 20km

Time taken to travel(t) = 20 minutes ,20/60 = 1/3

According to formula,

Speed = distance/time

V = d/t

V = 20/20

V = 1km/hr

So,the speed of the car is 60 kilometre(km)/per hour (hr)

Speed = 1 km/hour => 60kmhr {1 hr=60min}