# Lunar Elevation

**Calculus**Level 3

A spring launches a projectile straight up from the surface of the Moon. The projectile leaves the surface with an initial velocity of \(20 \text{ m/s}\). How many meters above the surface of the Moon will the projectile be at 20 seconds after its launched?

Consider the gravity at the surface to be \(1.62 \text{ m/s}^2\) Consider the acceleration due to gravity to be constant along the path of the projectile.