A particle of mass m is projected from the ground with an initial speed u_(0) at an angle alpha 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 pi//n where 'n' is

A particle of mass m is projected from the ground with an initial spee

1.	A particle of mass m is projected from the ground with an initial speed u_(0) at an angle alpha 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 pi//n where 'n' is
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