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A man in a balloon rising vertically wit...

A man in a balloon rising vertically with an accelration fo `4.9 ms^(-2)` released a ball `2 seconds` after the balloon is let fo from the fround. The greatst height above the ground reached by the ball is .

A

`14.7 m`

B

`19.6 m`

C

`9.8 m`

D

`24.5 m`

Text Solution

Verified by Experts

The correct Answer is:
A
After `2 s upsilon = 4.9xx2=9.9`
and `h=(1)/(2)xx4.9xx(2)^(2)=9.8m`
Greatest height, `h_(max)=h+(upsilon^(2))/(2g)=14.7 m`
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DC PANDEY-MOTION IN A PLANE-Check point 3.5
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