If a Projectile Is Fired with an Initial Speed Of v

Multiple Choice

If a projectile is fired with an initial speed of $v _ { 0 }$ ft/s at an angle $\alpha$
Above the horizontal, then its position after t seconds is given by the parametric equations $x = \left( v _ { 0 } \cos \alpha \right) t \text { and } y = \left( v _ { 0 } \sin \alpha \right) t - 16 t ^ { 2 }$
Where x and y are measured in feet.Suppose a gun fires a bullet into the air with an initial speed of 1024 ft/s at an angle of $30 ^ { \circ }$
To the horizontal. After how many seconds will the bullet hit the ground?

A) $36 s$
B) $64 s$
C) $16 s$
D) $325$
E) none of these