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Hail stones falling vertically with a speed of 123m/s hits the wind screen which makes an angle 30º with the horizontal. If car is running at velocity v(in m/s) so that the driver find the hailstones striking perpendicular to the wind screen. Find the value of v/2?

(A) 6 m/s 

(B) 8 m/s 

(C) 5 m/s 

(D) 9 m/s

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Best answer

Correct option (A) 6 m/s

Explanation:

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