Question

Anu’s car travel a distance of 400 km in 4 h. Find the speed of her car in m/s

Answer 1

Answer:

speed=dist./time

Step-by-step explanation:

400/4= 100

therefore, speed= 100m/s

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Answer 2

Given:

Anu’s car travel a distance of 400 km in 4 h.

To FInd:

Find the speed of her car in m/s?

Step-by-step explanation:

• we know distance of car is given by the speed $\times$ time.

• From the above formula we can calculate speed of car.

• we have Distance=400km=400000m ( 1km=1000m)

              time=4h=4 $\times$ 60  $\times$60=14400second (1h=3600s)

            $speed=\frac{distance}{time} =\frac{400000}{14400} =\frac{250}{9}m/s$

This, speed of car is $\frac{250}{9}$ m/s