Direct Measurement Video Library for Energy
Videos shown here contain grids, rulers, frame counters and other overlays that allow students to make measurements directly from the videos. Students can use this data to answer questions and solve problems. For each video, sample questions are shown, and in some cases, sample lesson plan ideas.
To download the video, alt-click on the link and select:
"save linked file as..." (Firefox)
"download liked file as..." (Safari)
"save link as..." (Chrome)
Dry Ice Puck Slides on a Circular Hoop
Download the QuickTime file: Direct Measurement Video of a dry ice puck sliding on a circular hoop (Quicktime Video 9.6MB Mar26 13) here.
Sample question: At what angle should the puck leave the surface if it is frictionless? At what horizontal location would a frictionless puck cross the ruler at the bottom of the screen?
Sample question: What is the power used by the clock?
Cart Rolls Down a Ramp and Collides with Spring
Download the QuickTime file: video of a cart rolling down a ramp into spring (Quicktime Video 2.9MB Jul7 12) here.
Sample question: What is the force constant for the spring?
Roller Coaster 1
Download the QuickTime file: Video of roller coaster 1 (Quicktime Video 11.2MB Jul23 12) here.
Sample question: What is the velocity of the roller coaster?
Sample question: Was mechanical energy conserved?
Download the QuickTime file: Video of M&M candy ballistic pendulum (Quicktime Video 1.3MB Jul7 12) here.
Sample question: Determine the velocity of the bullet as it leaves the pneumatic cannon.
Sample activity: Analyzing a Direct Measurement Video of a Ballistic Pendulum
Download the QuickTime file: video of person jumping on a trampoline (Quicktime Video 7.7MB Jul9 12) here.
Sample question: Determine the ratio of elastic potential energy when the jumper is at the low point to the gravitational potential energy when she is at the high point. Also, explain why you do not need to know the mass of the jumper to answer this question.
Sample activity: Direct Measurement Video of a Girl on a Trampoline