Day 126: Relative Velocities

2013-04-04 14.24.30 2013-04-04 14.30.24

 

Yesterday we derived the relative velocity equation, shown at the top of this whiteboard, from the combination of kinetic energy and momentum conservation for 1D collisions. They had questions yesterday about whether it was direction dependent, so I started today by simply asking them to find out. Go.

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