Question

Convert 72 km/hr. into m/s.
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Answer 1

Answer:

72km/hr= 20m/s

Step-by-step explanation:

72 km/hour

$\boxed{\frak{\purple{1km = 1000m}}}$

$\boxed{\sf{ \color{aqua}{1hour = 60minutes = 3600seconds}}}$

So, 72 km/hr can be written as:

$72 \times \displaystyle\frac{1000}{3600} \\ \\ 72 \times \displaystyle\frac{ \cancel{1000}}{ \cancel{3600}} \\ \\ {\cancel{72}} \times \displaystyle\frac{5}{ \cancel{18}} \\ \\ 4 \times 5 = 20$

So, 72km/hr= 20m/s