muhumedamaal muhumedamaal

23-07-2020
Physics

contestada

express each of the following in ms -1
a) 18kmh-1

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princessbee47 princessbee47

23-07-2020

1km=1000m; 1hr=3600secs
1km/hr=1000/3600= 5/18m/sec
To convert km/hr into m/sec, multiply the number by 5 and then divide it by 18.

18kmh-1= 18•5=90
90/18=5
5ms-1

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