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two inclined planes OA and OB intersect in a horizontal plane having their inclinations "a" and "b" with horizontal. a particle is projected from point P with velocity "u" perpendicular to plane OA . the particle strike plane OB perpendicularly at Q. (1) if a=b=30 degrees, the time of flight from P to Q is? (2)if a=b=30 degrees and OP=4.9m, initial velocity of projection is ?


 two inclined planes OA and OB intersect in a horizontal plane having their inclinations  "a" and "b"  with horizontal.

a particle is projected from point P with velocity "u" perpendicular to plane OA .

the particle strike plane OB perpendicularly at Q.

(1) if a=b=30 degrees, the time of flight from P to Q  is?

(2)if a=b=30 degrees and OP=4.9m, initial velocity of projection is ? 


Grade:9

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