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A ball is thrown from a comer of room of length 20 m and height 5 m such that the ball moves along the length of room just touching the ceiling and dr

Monjur Alahi

A ball is thrown from a comer of room of length 20 m and height 5 m such that the ball moves along the length of room just touching the ceiling and drops on the other corner. Find out
(i) Angle of projection
(ii) Velocity of projection
(iii) Time of flight


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Salim Ahmed Kawsar

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Correct Answer - (i)`45^(@)`
(ii)`10sqrt(2)m//s`
(iii) 2 sec

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