A valley has two walls inclined at 37° and 53° to the horizontal. A particle is projected from point P with a velocity of u = 20 m//s along a direction perpendicular to the incline wall OA. The Particle hits the incline surface RB perpendicularly at Q. Take g = 10 m//s^(2) and find: (a) The time of flight of the particle. (b) Vertical height h of the point P from horizontal surface OR. [tan 37^(@) = (3)/(4)]

A valley has two walls inclined at 37° and 53° to the horizontal. A

1.	A valley has two walls inclined at 37° and 53° to the horizontal. A particle is projected from point P with a velocity of u = 20 m//s along a direction perpendicular to the incline wall OA. The Particle hits the incline surface RB perpendicularly at Q. Take g = 10 m//s^(2) and find: (a) The time of flight of the particle. (b) Vertical height h of the point P from horizontal surface OR. [tan 37^(@) = (3)/(4)]
Answer» ANSWER :(a) `2.5 s` (B) `4.05 m`