A projectile is shot from the ground at a velocity of #7 m/s# and at an angle of #(7pi)/12#. How long will it take for the projectile to land?
Let the velocity of projection of the projectile be u with angle of projection
The vertical component of the velocity of projection is
Now if the time of flight be T then the object will return to the ground after T sec and during this T sec its total vertical displacement h will be zero. So applying the equation of motion under gravity we can write
In the given problem