Vernier Software and Technology
Vernier Software & Technology

Velocity and Speed


The magnitude of instantaneous velocity of an object is always the same as its instantaneous speed. But, if we compare the average speed of an object to the magnitude of its average velocity things are not always so simple.


In this activity, you will

  • Use Logger Pro video analysis tools to figure out why, even in the case of one-dimensional motion, the magnitude of the average velocity, \left| {\left\langle {{v_{\text{x}}}} \right\rangle } \right|, of an object moving along a line is not always the same as its average speed, \left\langle {\left| {{v_{\text{x}}}} \right|} \right\rangle .

Software for Experiment

This experiment uses Logger Pro software for video analysis. The video for analysis is included with the lab book.

Experiment 4 from Physics with Video Analysis Lab Book

<em>Physics with Video Analysis</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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