JEE Advanced | 2013Momentum and CollisionHard
Question
A particle of mass m is projected from the ground with an initial speed u0 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 u0. The angle that the composite system makes with the horizontal immediately after the collision is :-
Options
A.
B.
C.
D.
Solution
Maximum height of first particle Hmax =
Speed of 2nd particle at height Hmax given as
⇒ vy = u0cos α
By Momentum Conseravtion
⇒ Angle with horizontal immediately after the collision
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