Question

3. A body throws a stone so as to hit a bird sitting on a wall 10 m
high. Just on throwing the stone the bird flies away horizontally
maximum
with a velocity of 5 ms. The stone further goes upto a
height of 20 m above the ground and then hits the bird. Find the
initial velocity of stone and its angle of projection.​

Answer 1

$\large{\underline{\sf{Answer:}}}$

$\bold{Initial \:velocity\:of\:stone=}$$\bold{\red{5\sqrt{17}ms^{-1}}}$

$\bold{Angle\:of\:projection=}$$\bold{\red{tan^{-1}4}}$