Day 70: Time AdjustedPosted: December 17, 2012
For months now we have created a new calculated column in LoggerPro to deal with the fact that time is not zero when we start our analysis. I have them use this method instead of the checkbox possibility because I think it is easier for students to understand what we are doing…we are manually forcing the initial time to be zero. Today they were given a problem were a villain dropped a canister of poison gas and half a second later the hero pushes off downward to grab it (conveniently he can attach himself to a bungie cord in that time, go figure). Thus students have to find a way to algebraically figure out a way to deal with the fact that the two constant acceleration motions start at different times. One student said something along the lines of “it’s just like when we time-adjust, but we can do it in the equation like this.” I love when they make connections!