A projectile is any object moving through the air with only the force of gravity acting on it. 2D projectile motion means the motion of a projectile in both the up-down and left-right axis. We can use simple kinematics to solve for missing information about projectiles, because the motion on each axis is independent of the motion on the other. I end the video with 3 examples of using 2D kinematics to solve problems.
0:00 Definition of 2D Projectile Motion
1:15 Forces on a Projectile
2:01 Acceleration & Velocity of a Projectile
3:41 Fundamental Idea of Projectile Motion
4:22 How to Solve a Projectile Motion Problem
5:33 Projectile Code Words
6:13 Example Problem 1
8:58 Example Problem 2
10:55 Example Problem 3