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A man in a balloon rising vertically wit...

A man in a balloon rising vertically with an acceleration of 4.9 ms releases a ball 2 second after the balloon is let go from the ground. The greatest height above the ground reached by the ball is:

A

14.7 m

B

24.4 m

C

19.6 m

D

9.8 m

Text Solution

Verified by Experts

The correct Answer is:
a
Velocity attained by ball in first 2 second is
`v=u+at=0+4.9xx2=9.8 ms^(-1)`
and height atttained by ballon in first 2 `sec =(1)/(2) at^(2)`
`:.` Total height gained by ball =9.8+4.9=14.7m
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