Question

Two balls A and B are thrown with speed u and respectively. Both the balls cover the sarn
horizontal distance before returning to the plane of projection. If the angle of projection of ball B is 1!
with the honzontal, then the angle of projection of A is
(1)​

Answer 1

Answer:

89°

Explanation:

Two balls A and B are thrown with speed u and respectively. Both the balls cover the sarn

horizontal distance before returning to the plane of projection. If the angle of projection of ball B is 1!

with the honzontal, then the angle of projection of A is

To have Equal Horizontal Projection for Same Velocity

Sin2α  = Sin2β

Where α & β are angle of Projections with Horiozntal

α = 1°

=> Sin2° = Sin2β

=> either 2β  = 2°  => β = 1° ( but it is same as other angle)

or 2β = 180 - 2°   ( as Sinα = Sin(180 -α) )

=> β = 89°

then the angle of projection of A is 89°