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DD03Video Analysis of Projectile Motion
Larry Dukerich - Arizona State U & Dobson HS
Dwain Desbien - Arizona State U & Chandler- Gilbert College
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Video analysis software- a useful tool
Slope = velocity
Slope = acceleration
Graphs from VideoGraph - PAS
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Video analysis software
Canned movies are OK, but… They’re someone else’s idea of interesting
motion. Students don’t get chance to produce and
examine parabolic motion on their own.
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Video capture - then
Expensive hardware requirements fast computers with video cards expensive, high-end VCR’s
Used to be difficult and tedious frame by frame capture dropped frames made analysis tricky
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Video capture - now, with iMac
Alt 1: VHS and video capture box Use low-cost iMac ($800) or USB G3 Mac Standard VHS camera or VCR MyVideo from Eskape Labs ($250)
www.eskapelabs.com
Avid Cinema software
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USB Video capture box
QuickTime™ and aPhoto - JPEG decompressor
are needed to see this picture.
Composite video signal from VCR or camera
Output to USB port
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Video capture - with iMac DV
Alt 2: Digital video input Digital camera and Firewire (IEEE 1394) iMac DV ($1000) iMovie software
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Digital video - iMac DV
QuickTime™ and aPhoto - JPEG decompressor
are needed to see this picture.
FireWire connector
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Physics - 2nd Quarter Project
Produce and analyze video of projectile motion. Teams of 3 - 4 students Done outside of class time Required minimal teacher intervention