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Question

With what speed should a body be thrown upwards so that the distances traversed in 5th second and 6th second are equal?

A
5.84 m/s
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B
49 m/s
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C
98 m/s
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D
98 m/s
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Solution

The correct option is B 49 m/s
Let the upward direction be taken positive.
For the distance covered in 5th second and 6th second to be equal, the body must start descending after 5th second.
Total time taken in upward journey should be 5 s
u=gt=9.8×5=49 m/s

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