Usain Bolt took 9.63 seconds to cover 100 meters in the London Olympics. What was the speed of Usain Bolt?

11 m/s

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10 m/s

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9.63 m/s

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10.38 m/s

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Solution

The correct option is D
10.38 m/s

Distance covered by Bolt = 100 mtrs
Time taken = 9.63 seconds

$S p e e d = \frac{Distance}{Time} = \frac{100}{9.63} = 10.38 m / s$

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