With what speed should a body be thrown upwards so that the distances traversed in 5th second and 6th second are equal?
A
5.84m/s
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B
49m/s
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C
√98m/s
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D
98m/s
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Solution
The correct option is B49m/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 5s ∴u=gt=9.8×5=49m/s