A balloon starts rising from the ground with an acceleration of 2.5 ms^ -2 . After 4 s, a stone is released from the balloon. If g=10 ms^ -2 , the stone will

JEE Main Physics question

Physics Motion in a Straight Line JEE Main

A balloon starts rising from the ground with an acceleration of 2.5 ms. After 4 s, a stone is released from the balloon. If ms, the stone will

(A)Have a displacement of 25 m
(B)Cover a total distance of 30 mCorrect
(C)Reach the ground in 3.2 sCorrect
(D)Begin to move down immediately after being released

Answer: (B),(C)

Solution

At release ( s): balloon's velocity ms (up), height m. Since the stone has upward velocity 10 ms at release, it continues rising for another s before turning back — so it does **not** move down immediately; (D) is false. Peak height gained

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Question ID VK-152147