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Question

A cheetah is the fastest land animal and can achieve a peak velocity of 100 kmIh up to distances less than 500 m. If a cheetah spots his prey at a distance of 100 m, what is the minimum time it will take to get its prey, if the average velocity attained by it is 90 km/h ?


A
4s
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B
5s
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C
6s
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D
7s
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Solution

The correct option is A 4s
Average velocity of cheetah = 90 km/h
=90×518m/s=,25m/s=90×518m/s=,25m/s
∴ Time taken ={Distancecovered}/{Averagevelocity=DistancecoveredAveragevelocity}
100m25m/s=4s.

Physics

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