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Grade: 11
        A stone falls from a balloon , ascending with a velocity of 10m/s and reaches the ground in 17 seconds, how high was the balloon when the stone was dropped?
6 months ago

Answers : (1)

Arun
11696 Points
							

When it is released, the stone will rise 5m before stopping. 0=100–2aD. D=5m. Gravitational acceleration, a, is 10m/s^2

This will take 1 second.

16 seconds later the stone will hit the ground. The stone will fall 1280 m in 10 seconds (D=1/2 aT^2)

So the release point was 5 meters below 1280 meters, or 1275 meter

Regards

Arun (askIITians forum expert)

6 months ago
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