A balloon is rising steadily up with velocity of 19.6 m/s. If a stone is dropped from it, the separation between balloon and the stone after 2 seconds is
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a
19.6 m
b
39.2 m
c
9.8 m
d
25.4 m
answer is A.
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Detailed Solution
Separation between stone and the balloon is ____12gt2=129.8×4=19.6 m