A projectile is fired with a velocity of 320 m/s at an angle of 30º to the horizontal. Find :
1. the time to reach its greatest height.
2. its horizontal range

With the same velocity, what is the maximum possible range ?

1. Using v=u+at upward u can get time ( final velocity=0)
2. use s=vt in horizontal direction you can get distance ( time = 2* t)