 We can take this a step further and work out a general formula for the maximum range of projectile motion, which is launched and lands at the same height. We already have an equation for our range x, which depends on vi, theta, and g. If we substitute theta equals 45 degrees into the equation, then sin of 2 theta is 1, and the maximum range is vi squared over g. And this is the maximum range for any projectile motion, which is launched, from, and lands at, the same height. For this particular situation, we can work out Dolphin's maximum range by substituting in vi, which is 5 meters per second, and g, which is 9.8 meters per second squared. This yields a maximum range of 2.55 meters. I covered a lot in this video, but by now you've seen most of the questions you might be asked about projectile motion calculations.