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3 years ago

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$then \: what \: is \: its \: speed \: in \: km \: {h}^{ - 1}$
Step by step explanation needed :)
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Question In a easy way -

If the speed of a car is 20 m s^-1 then what is its speed in km h^-1 ?

Physics

2 answers:

nadezda [96]3 years ago

7 0

Answer:

72 km/h

Explanation:

Speed of car = 20m/s

So, here to find the speed in km/h we will change the metre to km and seconds to hours .

$\frac{20}{1000} \div \frac{1}{3600}$

= 72 km/hr

to change into km divide by 1000

(1 m = 1/1000km)

and,

to change into hours divide by 60*60= 3600

help kiya kya?

Vilka [71]3 years ago

6 0

hope it helps

mark as brainlist

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