Question

exprees each of the following speeds in mertre per second. (a) 72 km per hour​

Answer 1

so km per hour =1000 metres per 3600 seconds

so1000/3600=5/18

so 72×5/18=4×5=20m/s

Answer 2

Answer:

72*1000/ 60*60

= 20 m / s

Step-by-step explanation:

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