Question
Projectile motions Plzz help!!!!?
Two inclined planes OA and OB intersect in a horizontal plane having their inclinations α and β respectively as shown in the figure in the link given below. A particle is projected from point P with velocity 'u' along a direction perpendicular to plane OA. The particle strikes plane OB perpendicularly at Q.1) If α = 30 degrees and β = 30 degrees find the time of flight from P to Q.
2)If α = 30 degrees and β = 30 degrees and 'a'= 4.9 m, find the initial velocity of projection.
2)If α = 30 degrees and β = 30 degrees and 'a'= 4.9 m, find the initial velocity of projection.
Joshi sir comment
component of initial velocity along OB = ucos30
component of final velocity along OB = 0
component of g along OB = -gsin30
now use v = u + at
in second part clearly explain "a"