Question

Express each of the following speeds in m/s.
(a) 72 km/h
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Answer 1

Answer:

20m/s

Step-by-step explanation:

done in above image

Answer 2

answer - 20m/s

step by step -

from km to m. - multiply by 1000

from hr to sec 60×60

hence , 72×1000/60×60

=20m/s