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JEE Main 2002 (AIEEE) · Motion Under Gravity

Motion Under Gravity question from JEE Main 2002 (AIEEE)

Q58JEE Main 2002 · AIEEEEasy

Motion Under Gravity

From a building two balls A and B are thrown such that A is thrown upwards and B downwards ( both vertically with the same speed ). If vA and vB are their respective velocities on reaching the ground, then

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Answer: (b)

Ball A comes back to the throwing point with the same speed $u$ , now moving down, just like B.
Both then fall the same height $h$ : $v^2 = u^2 + 2gh$ for each.
So the answer is (b) $v_A = v_B$ .

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