Reaction Meter

February 23, 2012   A-level Units, Fun Science, Kinematics

This is a simple tool created for my JC1 students as they begin to learn about kinematics. It's designed based on the equation s = ut +\frac{1}{2}at^2. Feel free to print it out (on A4 sized paper that is at least 80 gsm).

What I tell my students to do is this:

1. Get a partner. One will release the card while the other will try to catch it with his fingers.
2. The releaser will place the card betweeen the catcher's thumb and index finger which should leave a small gap of about 2 cm.
3. Without any advance notic, the one holding the card will let go of the card.
4. The position where the catcher grips the card will indicate his reaction time. 

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