Projectile motion sniper bullet question

[kaushik29]

A sniper fires a bullet at 120 m/s at 30° above the horizontal from the roof top of a 35 m high parking garage. If the bullet strikes the level ground beside the parking garage:

a.)How long was the bullet in the air?
b.)How far from the base of the parking garage did the bullet land?
c.)At what angle did the bullet land?

 

[mfb]

Please use the template for homework problems. Which equations do you know for projectiles? What did you do so far? Can you calculate some additional parameters? Where did you run into problems?