Question

 Convert each of the following speed into m/sec:

(i) 72 km/hr       

(ii) 12.6 km/hr       

(iii) 23.4 km/hr                  

(iv) 306 km/hr  

(v) 38 km/hr

(vi) 54 km/hr     

(vii) 81 km/hr    

(viii) 14.4 km/hr
give in explaination​

Answer 1

Answer:

i) 20 m/s

ii) 3.5 m/s

iii) 6.5 m/s

iv)85 m/s

v) 10.5556 m/s

vi) 15 m/s

vii) 22.5 m/s

viii) 4 m/s

Explanation:

to convert km/hr to m/s

we have to multiply given number with 1000 / 3600

for example,

72km/hr= 72×1000/3600

ie, 72×10/36=2×10 =20 m/s

here it goes