Question

A ball is thrown from a point on ground at some angle of projection at the same time a bird starts from a point directly above the point of projection at a height h horizontally with speed u

Answer 1

V cos θ = u 

h = u^2 sin 2θ/ 2g 

v sin θ= √2gh 

R = (2usinθ ucosθ)/g 

= 2√(2gh) u/g 

=2u√(2h/g)