If a projectile is shot at an angle of #(7pi)/12# and at a velocity of #9 m/s#, when will it reach its maximum height?
We know that according to the law of motion .
So it can be written as ,
we know that vertical component of the velocity is
here it can be written as
for attaining maximum height we get final velocity
as the acceleration due to gravity is in negative direction.
so we get .