Question

Convert 40 km/hr to m/s.

Answer 1

(40*5/18)m/s
11.1111111.......m/s
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Answer 2

40 km/hr in m/s is 11.11 m/s.

Given - Speed in km/hr

Find - Speed in m/s

Solution - As per the known fact, 1 kilometre is 1000 metres and 1 hour is 60 minutes. Further, 1 minute is 60 seconds.

So, 1 hour in seconds = 60*60

Performing multiplication

1 hour = 3600 seconds

Now, converting given speed from km/hr to m/s.

Speed = $\frac{40*1000}{3600}$

Cancelling zero as it is common in both numerator and denominator

Speed = $\frac{400}{36}$

Performing Division

Speed = 11.11 m/s.

Hence, the speed in m/s is 11.11.

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