Test Academy | A particle is projected from a point O with a velocity u in a direction making an angle α upward with the horizontal. After some time at point P it is moving at right angle with its initial direction of projection. The time of flight from O to P is (u sinα)/g, (u cosecα)/g, (u tanα)/g, (u secα)/g

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A particle is projected from a point O with a velocity u in a direction making an angle α upward with the horizontal. After some time at point P it is moving at right angle with its initial direction of projection. The time of flight from O to P is

Options :

(u sinα)/g
(u cosecα)/g
(u tanα)/g
(u secα)/g

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