Question

(a) 54 k m/hr into m/s
(b) 150 m/s into km/hr
(c) 20 m/s into km/hr​

Answer 1

Explanation:

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Answer 2

(a) Given :

Speed=54km/hr

Conversion : 1km/hr =1000m/60x60sec=5/18 m/s

Speed=54km/h

= 54 x5/18

=270/18

=15m/s

Therefore 54km./hr speed is equal to 15m/s

(b) The distance you should cover is: S=150 km

Your average speed is: v=50 km/h

Therefore, to calculate the time you will take to cover this distance, we can use the basic relationship between space, distance and time, and we find:

so, you will take 3 hours.

(c) m/s = m/s * 3600/1000 = km/h

20 m/s

= 20 x 3600/1000

= 72000/1000

= 72 km/h..

I hope it helps u..