motion detector lab

so today we played around with motion detectors. it was kind of hard because when you where triyng to match your speed to a line on the graph, it got really jiggly whenever you made the smallest move. i thought it was interesting when you had the three graphs for one motion because the first graph was a really smooth slope but the third graph was really jagged. and whenever you walked backward the line went up but if you started in the back and walked forward the line went down. and when you were trying to move really slow it was still jagged which i found odd.