The study of projectiles is central to this section of chapter 3. Using what was learned about motion in X and Y in the previous chapter, we will examine projectiles launched at an angle above the horizontal. The most common mistake to make is to include gravity into X dimension calculations...

The path of a projectile is called the trajectory and follows a parabolic path. We will almost always ignore the effects of air resistance at our level of study :) making the math much less complicated. Motion in X is independent of motion in Y, sharing only the TIME of the flight. The horizontal velocity in X is CONSTANT! The vertical velocity in Y changes over time.

*The acceleration vector always points straight down and has the value of "g" 9.8 m/s^2 *

## Ch 3 2D Motion

The study of projectiles is central to this section of chapter 3. Using what was learned about motion in X and Y in the previous chapter, we will examine projectiles launched at an angle above the horizontal. The most common mistake to make is to include gravity into X dimension calculations...

## GRAVITY ONLY ACTS IN THE Y DIMENSION!!!!!!

## Check out The Physics Classroom for excellent tutorials on projectiles

The path of a projectile is called the

trajectoryand follows a parabolic path. We will almost always ignore the effects of air resistance at our level of study :) making the math much less complicated. Motion in X is independent of motion in Y, sharing only the TIME of the flight. The horizontal velocity in X is CONSTANT! The vertical velocity in Y changes over time.*The acceleration vector always points straight down and has the value of "g" 9.8 m/s^2*## Explore the PhET Projectile Simulation

## PhysClips Interactive: Projectile Launch

## Initial Velocity Components in X and Y

Very often initial velocities need to be broken into their X and Y components.