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Two particles A and B are Placed as shown in figure. The Particle A, on the top of tower, is projected horizontally with a velocity u and particle B is projected along the surface towards the tower simultaneously. If both particles meet each other, then the speed of projection of particle B is [ignore any friction]

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a

dg2H−u

b

dg2H

c

dg2H+u

d

u

answer is A.

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Detailed Solution

Time taken by particles to collide t=2HgThen u2Hg+V2Hg=d⇒ u+V=dg2H or v=dg2H−u

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Two particles A and B are Placed as shown in figure. The Particle A, on the top of tower, is projected horizontally with a velocity u and particle B is projected along the surface towards the tower simultaneously. If both particles meet each other, then the speed of projection of particle B is [ignore any friction]