Day 76: Reviewing

20140108_095821

 

I love doing projectile motion after both kinematics and forces for a couple reasons; 1) There’s a very good reason g=9.8 m/s/s 2) After doing forces, I love the opportunity to go back and review kinematics in a slightly new context. These two groups squared off about which velocity graph was correct for a dropped object, assuming the position graph was correct. After that I asked the class to draw a new position graph assuming the left velocity graph was correct, and we had a discussion about coordinate systems and the importance of defining it (and that it doesn’t matter how you define it).

##pmm

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