Questions
A ball thrown down the incline strikes at a point on the incline 25 m below the horizontal as shown in the figure. If the ball rises to a maximum height of 20 m above the point of projection, the angle of projection a (with horizontal x axis) is
detailed solution
Correct option is A
20 = u2sin2x2g ⇒u sin α = 20-25 = 20t - 1210t2 ⇒ t = 5s75 = (u cos α )tSolve to get tan α = 43Talk to our academic expert!
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