Sample Problem 2. A sprinter (fast runner) attains a maximum speed of 10 m/s. What will be his
speed in km/h?
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Solution. Here the speed has been given to us in the units of metres/second and we have to conventa
into the wnits of kilometres/hour. In order to do this, we have to convert 10 metres into kilometres by
dividing it by 1000. And since there are 60 x 60 seconds in 1 hour,
we have also to multiply 10 by 60x60
Thus, we can convert the speed of 10 metres/second into kilometres/hour by dividing this speed of
1000 and multiplying it by 60 x 60
Speed 10 metres/second
107 60260
kilometres/hour
1000
36 km/h
Thus, a speed of 10 m/s is equal to 36 km/h.
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Answer:
Sample Problem 2. A sprinter (fast runner) attains a maximum speed of 10 m/s. What will be his
speed in km/h?
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