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# Experimentsâ€‹

## Walk the Line – Straight Line Distance Graphs

Experiment #1 from Real-World Math with Vernier

Education Level
High School

### Introduction

When one quantity changes at a constant rate with respect to another, we say they are linearly related. Mathematically, we describe this relationship by defining a linear equation. In real-world applications, some quantities are linearly related and can be represented by using a straight-line graph.

In this activity, you will create straight-line, or constant-speed, position versus time plots using a Motion Detector, and then develop linear equations to describe these plots mathematically.

### Objectives

• Record distance versus time data for a person walking at a uniform rate.
• Analyze the data to extract slope and intercept information.
• Interpret the slope and intercept information for physical meaning.

### Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

Motion Detector

CBR 2