A particle of mass m is projected from the ground with an initial speed u 0 at an angle α with the horizontal. At the highest point of its trajectory, it makes a completely inelastic collision with another identical particle, which was thrown vertically upward from the ground with the same initial speed u 0 . The angle that the composite system makes with the horizontal immediately after the collision is :
Text Solution
Verified by ExpertsA
At the highest point
v 1 = 
(by applying momentum conservation in horizontal direction)
v 2 = 
(by applying momentum conservation in vertical direction)
(H = 
) ⇒ θ = 45°
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