1.

A particle projected from ground moves at an angle 45∘ with horizontal one second after projection and speed is minimum two seconds after the projection. The angle of projection of particle is[Neglect the effect of air resistance]

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A particle projected from ground moves at an angle 45∘ with horizontal one second after projection and speed is minimum two seconds after the projection. The angle of projection of particle is

[Neglect the effect of air resistance]



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