About This Unit

Kinematics is the study of motion. This unit covers objects moving in straight-line paths (one dimension) and in parabolic paths (two dimensions): motion terminology, freely falling objects, projectile motion, and the commonly used kinematic equations.

About This Lesson

Welcome to Motion Terms, the first lesson in Unit 2: Kinematics.

This lesson introduces the vocabulary of motion — the precise terms every kinematics problem is built on.

How to Use This Lesson

1. Watch the teaching video
2. Complete the worksheet
3. Check your answers
4. Use the worked video solutions for any problems you want to review step by step

Teaching Video

In this video, I cover kinematic terms and their definitions. I will be diving into position, distance, displacement, velocity and acceleration, as well as average speed and average velocity. I also work through a practice problem and make two real-world analogies.

Practice Materials

Use the resources below to practice the concepts from this lesson. Try to complete the worksheet on your own before checking the answer key.

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• Download Worksheet (2.01 Motion Terms)
• Download Answer Key (2.01 Motion Terms)

Worked Solutions

The videos below walk through each worksheet problem step by step.

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5–6

Problem 7

Next Step
When you’re ready, continue to 2.02 Constant Velocity.