A) 100 m
B) 200 m
C) 400 m
D) 150 m
Correct Answer: B
Solution :
For stone to be dropped from rising balloon of velocity 29 m/s. \[u=-\ 29\ m/s,\] t = 10 sec. \[\therefore h=-\ 29\times 10+\frac{1}{2}\times 9.8\times 100\] = ? 290 + 490 = 200 m.
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