Velocity Friday: Undefined velocities, Bernoulli, and Magnus

One meter segments were chalk marked into the floor.


Then a velocity of zero meters per second was demonstrated. 


Zero meters per second was graphed, as was a negative velocity. 

Then the issue of the implications of a vertical line on a time versus distance graph were covered. 

Once a student said "Nothing" which triggered Billy Preston's 1974 Nothing from nothing leaves nothing. 

The funnels were brand new and still in their packaging. So I unpacked them and asked a student to blow a ping pong ball out of the funnel. As hard as she tried, and she tried hard, the ping pong ball would not budge. This led to Bernoulli's theorem of pressure differentials due to velocity. The class wrapped up with the Magnus effect using ping pong balls and curved ball launchers. 

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