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A projectile is projected from the ground making an angle of $30 °$ with the horizontal. Air exerts a drag which is proportional to the velocity of the projectile

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at highest point velocity will be horizontal

the time of descent will be greater than the time of ascent

the time of ascent will be equal to the time of descent

the time of ascent will be greater than the time of descent

answer is A, C.

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Detailed Solution

During upward journey acceleration due to gravity and vertical component of retardation are in same direction. While during downward journey they are in opposite directions. Hence, time of descent will be greater than time of ascent

At the highest point vertical component of velocity is zero .

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