A stone falls from a balloon that is descending at a uniform rate of 12m/s. The displacement of the stone from the point of release after 10sec is (take g=9.8m/s2)
A
490m
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B
510m
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C
610m
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D
725m
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Solution
The correct option is C610m Initial velocity of the stone u=12m/s (taking downward direction as positive)
Using second equation of motion, after t=10s, displacement of the stone is given by