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Chapter 4: Two-Dimensional and Projectile Motion

Difficulty Level: At Grade Created by: CK-12

License: CC BY-NC 3.0

The Big Idea

In this chapter, we aim to understand and explain the parabolic motion of a thrown object, known as projectile motion. We can break down any initial velocity vector into its vertical and horizontal components. Motion in one direction is unrelated to motion in perpendicular directions, so we can treat the individual components as separate one-dimensional motion problems using all the equations from the last chapter. Once the object has been thrown, the only acceleration is from gravity, in the vertical direction. The horizontal component of velocity remains unchanged (ignoring air resistance) throughout the flight.

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