Students took a quiz on WS 1, then corrected WS 2 (answers here). We did a lab that measured students reaction times as a meter stick was dropped. It was found that the average reaction time for students would allow for a dollar bill to completely drop through one's fingers before they had time to react to it. At the end of the period we compared average vs. instantaneous velocity. The method for calculating them is the same, the difference being the time interval over which you do the calculations. With instantaneous velocity the time interval is short, and centered on the time you are interested in.
HW: Quiz on WS 2; Review Sheet (due next block); Bring all papers next block
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