Problem$-5$

A projectile is fired with an initial velocity of $240\frac{m}{s}$ at an angle $30-$degree with the

horizontal towards target $($B$)$ located at a horizontal distance of $3600$ m from fire

point $($A$).$ Neglecting the air resistance,

a$.$ Determine the time required for the projectile to

reach the target at $(B).$

b$.$ Determine the height of the target $(B)$ from the

datum ground at the fire point $(A).$