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A balloon is rising vertically up with a...

 A balloon is rising vertically up with a velocity of 29 `ms^(-1)`. A stone is dropped from it and it reaches the ground in 10 seconds. The height of the balloon when the stone was dropped from it is

A

400 m

B

150 m

C

100 m

D

200 m

Text Solution

Verified by Experts

The correct Answer is:
d
Applying `s=ut+1//2at^(2)`
Here `h= -ut+(1)/(2)g t^(2)`
`=-29xx10+(1)/(2)xx9.8xx100`
`=-290+490=200 m`
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