Projectile Motion

Projectile motion is the motion of something being thrown or launched. It behaves differently from linear motion because once something leaves the ground the acceleration due to gravity pulls it back down to the Earth. The acceleration due to gravity is always present but does not impact us when we are standing on the Earth due to there being a force from the ground balancing the force from gravity. The pull from gravity is countered by a push from the ground. Near Earth, the acceleration due to gravity is a known value of 9.81 m/s^2 but as we get further from Earth the acceleration due to gravity changes. For a projectile motion problem we assume that acceleration due to gravity is consistently 9.81 m/s^2. In the first video, I try to relate projectile motion to both the riverboat problem and the equations of motion we are using in the hovercraft problem.