1.

A packet is released from a balloon which is moving upward when the balloon is at a height 200 m above ground. The packet reaches the ground in 8 sec. Speed of the balloon when the packet is released, is: (Take `g = 10 m//s^(2)`)A. 18 m/sB. 15 m/sC. 12 m/sD. 9 m/s

Answer» Correct Answer - B
`-200 = u xx 8 - (1)/(2) xx 10 xx (8)^(2)`


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