Physics
A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground.

0.043055555555556
0.044444444444444
Cannot be found from the given information.
0.042361111111111

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Physics
A balloon filled with hydrogen will

Continue going upwards uninterrupted
Burst after reaching some height
Reach a particular height and start coming down
Reach a particular height and remain floating

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