Question

Convert 60 m/s into km/h

Answer 1

Answer:

216 km/h

Explanation:

1000 m = 1 km

or 1 m = 1/1000 km

AND,

1 hr = 60 min

1 min = 60 sec

So, 1 hr = 60*60 sec

or 1 hr = 3600 sec

or 1 sec = 1/3600 hrs

Now,

$\text{Speed = } 60 \text{ ms ^{-1} }\\\\\\\text{or, speed = } 60 \times \dfrac{1}{1000} \: km \times \dfrac{1}{\dfrac{1}{3600}} \: hrs\\\\\\\\\text{or Speed = } 60 \times \dfrac{3600}{1000} \: km/h\\\\\\= 6 \times 36\\\\\\= \boxed{216 \: km/h}$

Answer 2

216 km/h

Explanation:

1000 m = 1 km

or 1 m = 1/1000 km

AND,

1 hr = 60 min

1 min = 60 sec

So, 1 hr = 60*60 sec

or 1 hr = 3600 sec

or 1 sec = 1/3600 hrs

Now,

Answer=216 km/h