Force & Motion: 1-D Frame of Reference
Directly measure how frame of reference affects quantitative measurement of motion, establishing a solid foundation of relative motion.
Lab Summary
Students will use a Motion Sensor to investigate the concept of relative motion. The students' frame of reference, i.e. point of view, is always as if they are the cart with a Motion Sensor mounted on it. They will investigate four scenarios:
1) The student frame of reference (always the cart with the motion sensor) is stationary. A second cart is moving directly toward the student.
2) The two carts are moving directly toward one another.
3) The two carts are moving in the same exact direction.
4) The two carts are moving away from one another (i.e., in opposite directions).
Method
Use the Motion Sensor to measure the motion of carts as they move relative to each other. Analyze the graph of position versus time.
Here's What You Need
U.S. Educator prices shown.
Required for computer-based lab: (See lab download for Xplorer GLX-based lab requirements, which may differ)
Probeware
PASPORT Motion Sensor (PS-2103A) - $80
Accurately measures position, velocity, and acceleration of a target. For use with PASPORT Interfaces.
Xplorer GLX (PS-2002) - $349
The Xplorer GLX is a data collection, graphing, and analysis tool designed for science students and educators.
Other Products
1.2 m PAScar Dynamics System (ME-6955) - $259
Equip your lab with carts and a high-quality 1.2 m aluminum track.
Other Materials
- Card stock
- Masking Tape
Lab Manual
The computer-based activity is included in Explorations in Physics (PS-2810). The Xplorer GLX-based lab is included in Physics with the Xplorer GLX (PS-2826). Both manuals are complete with Teacher Information pages, student instructions and handouts, and sample data.
For your convenience, we offer bundles which provide the probeware for the activities in the manual. For more, please see:
Computer-based Physics Lab Manual and Bundles
Xplorer GLX-based Physics Lab Manual and Bundles
