A ball is thrown with a speed u , at an angle θ with the horizontal. At the highest point of its motion, the strength of gravity is somehow doubled. Taking this change into account, the total time of flight of the projectile is

Question

A ball is thrown with a speed u , at an angle θ with the horizontal. At the highest point of its motion, the strength of gravity is somehow doubled. Taking this change into account, the total time of flight of the projectile is, 2 u s i n θ g, 3 2 u s i n θ g, 3 4 u s i n θ g, 2 + 1 2 u s i n θ g

MARKS App · Accepted Answer

Time of ascent t 1 = u s i n θ g Time of descent t 2 = 2 H 2 g t 2 = u 2 s i n 2 θ 2 g 2 = u s i n θ 2 g t = t 1 + t 2 = u s i n θ g + u s i n θ 2 g ⇒ u s i n θ g 2 + 1 2

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