Attention: Safety Recall of Vernier Go Direct Charge Station. Click to learn more.



Walk the Line – Straight Line Distance Graphs

Experiment #1 from Real-World Math with Vernier

Education Level
High School


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.


  • 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.

Option 2


Ready to Experiment?

Ask an Expert

Get answers to your questions about how to teach this experiment with our support team.

Purchase the Lab Book

This experiment is #1 of Real-World Math with Vernier. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

Learn More