Time and Distance Conversion Examples
In this class, We discuss Time and Distance Conversion Examples.
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Example 1:
How many minutes does Aditi take to cover a distance of 400 meters if she runs at a speed of 20 kilometres per hour?
Solution:
We should convert 20 kmph to meters per second.
The distance is in meters.
Multiply by 5/18 to convert kilometers per hour to meters per second.
20 * 5 / 18
= 50/9 m/sec
Time = Distance / Speed = 400/(50/9)
t = 72 sec
t = 1 12/60 minute.
t = 1 1/5 min.
Example 2:
A cyclist covers a distance of 750 meters in 2min 30 sec.
What is the speed in kilometres per hour?
Solution:
Speed = distance / time = 750/150 = 5 m/sec
2min 30 sec = 150 seconds.
To convert meters per second to kilometers per hour we multiply by 18/5.
5 * 18/5
s = 18 kmph.