Question

is%20%5C%3A%2020m%20%5C%3A%20%20%7Bs%7D%5E%7B%20-%201%7D%20" id="TexFormula1" title="If \: the \: speed \: of \: a \: car \: is \: 20m \: {s}^{ - 1} " alt="If \: the \: speed \: of \: a \: car \: is \: 20m \: {s}^{ - 1} " align="absmiddle" class="latex-formula">
$then \: what \: is \: its \: speed \: in \: km \: {h}^{ - 1}$
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 ?
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Answer 1

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?

Answer 2

hope it helps

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