Question 98

A Person runs 200 meters in 20 seconds. Whatis his speed in kmph?

Solution

Method 1

Distance = 200 m

Time = 20s

Speed in m/s = (200/20) m/s

= 10m/s

Now Important pointer to remember

5m/s = 18 km/h

So 10m/s = 36kmph Answer

Method 2

20 s for 200m.

1 Hr. (20 x 3 x 60 s) for (200 x 3 x60) m

1 Hr for 36000m

1 Hr for 36 km

Hence speed 36kmph Answer

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