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Question
A boy drives his scooter with a uniform speed of 45 km/h. Find the time taken to cover 900 m.
Solution
To find the time taken to cover 900 m
Convert speed to m/s
Since 1 km/h = `5/18` m/s
45 km/h = `45xx5/18` = 12.5 m/s
`"Time" = "Distance"/"Speed"`
Substitute the values:
`"Time" = "900 m"/"12.5 m/s"`
= 72 seconds.
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