JEE Main Physics question
A stone is projected with speed at an angle to the horizontal. After passing through the highest point of its trajectory, its velocity vector makes an angle of with the horizontal at a point that is a height below the highest point. The time elapsed, from the highest point to this instant, is
Answer: (C)
Solution
At the highest point, the velocity is purely horizontal, , with zero vertical component. After falling a height from that point, the vertical speed gained is . The velocity vector makes
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