### Range and Elevation

For a projectile fired on level ground, the maximum range occurs when the
launch angle is 45 degrees. What if the projectile lands at a level higher
than its launch position? What launch angle, measured from the horizontal,
maximizes the range? Note that the speed of the projectile is the same for
all cases.

- 45 degrees
- an angle larger than 45 degrees
- an angle smaller than 45 degrees
- not enough information is given