Physics 11 Today we finally graphed data from our constant acceleration lab. There were several hurdles to overcome, most notably the kids getting their head around what a tangent line is. We finally had some really good discussion with the whiteboards, with students really challenging each other.
Some common pre-conceptions encountered:
- the velocity time graph should have horizontal lines (like before)
- points on the graph should be connected with a line
- a faster starting push on the object should make the v-t graph steeper because it’s going faster
I’m not sure yet how I will deal with the quadratic relationship. If I go over curve straightening, it will certainly be a bit hand-wavy.