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http://www.askiitians.com/forums/Mechanics/10/25735/TOUGH!!!!!.htm

Grade:7

1 Answers

Sumit Majumdar IIT Delhi
askIITians Faculty 137 Points
8 years ago
Solution:

The point of release is a point in the air, not attached to the balloon.

Since speed of balloon has same directionas acceleration due to gravity,

u = 12m/s a=9.8 m2/s t=10s

s = ut + 0.5at2

= 120 + (0.5)(9.8)(100)

=610 m

Thanks & Regards
Sumit Majumdar,
askIITians Faculty
Ph.D,IIT Delhi

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