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Speed

If Kamal take...

Question

If Kamal takes 20 seconds to run in a 100 metre running race, then what is his speed?

A

4 m / s

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B

5 m / s

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C

6 m / s

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D

7 m / s

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Solution

The correct option is B $5 m / s$
$Speed = \frac{Length(m)}{Time(s)} = \frac{100}{20} = 5 m / s$

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