Question

A bus was travelling with 9 speed of 72 kmph. What is it speed in m/s ?​

Answer 1

Answer: Is 20 m/s

Explanation:

The formula of speed is

Speed = distance

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time

We know 1 km =1000 m and 1hr =3600 sec

so 1 kmph = 1 km/1 hr= 1000m/3600sec

i.e.1 kmph =5/18 m/s

Then, 72 kmph= 72× 5/18 = 4×5 =20 m/s

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Answer 2

Answer:

The ans will be 20 m/ s

Explanation:

You must multiply 72 to 1000 because 1 Km=1000 m

Then divide it to 3600 because 1 hour have 3600 seconds.i.e.

72*1000÷3600=20m/s

so 72km/h=20 m/s

hope it will help u....