Two dart guns are fired toward the ground simultaneously. One fires a light dart, the other fires a heavy bullet. Which dart hits the ground first?
I use this demonstration after teaching all three of Newton's laws of motion. Students identify, discuss, and debate possible outcomes before the demonstration is carried out. The presentation includes a carefully crafted slides and compelling high-speed video.
This one is among my favorite demonstrations in mechanics.
Includes
Student document (print-friendly Google Docs file on Google Drive)
Observations presentation (link embedded in student document)
Answer key
The sound effects used on the last slide of the presentation make more sense if you worked through the Newton's Second Law Springboard.
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