Displacement in Two Dimensions: Motion in Two
Dimensions
Strobe Penlight
PIRA Class: 1D10.05*
Purpose
To observe the relationship between velocity, position &
time
Description
Wave a blinking (LED) light about to observe the spacing
between the blinks. Compare the spacings between the blinks w/ the moving wand's rate of
motion.
1. Plug in, turn on strobe penlight
2. Wave wand about allowing students to observe the equal
time interval displacements of the wand's tip
PEDAGOGY: Vary the rate of motion for students to observe the flashes closer & further
Equipment
Strobe penlight w/ power supply