Question

Convert each of the following speeds into km/hr;
(1) 25 m/sec
(ii) 7.5 m/sec
(iii) 1 m / sec​

Answer 1

Formula:

m/s to km/s

Multiply number by 18/5

km/s to m/s

Multiply number by 5/18

i. 25×18/5 = 90km/s

ii. 7.5×18/5 = 27km/s

iii. 1×18/5 = 3.6km/s

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Answer 2

1.90km/ hour

2 .18 km/hr

3.3.6 km/hr