Day 63: Projectile Problems & Energy Conservation

AP Physics: Projectile Problems

For most of the hour, students worked on some problems for projectiles launched horizontally. A few students needed reminders to start by sketching and annotating their velocity-time graphs, but students were pretty successful once they remembered to use the graphs. Students also checked to make sure I’m not going to do anything crazy tomorrow, like go over the problems, when they’ve much rather do the Mistake Game.

On Friday, students requested slow-motion video of the race between a horizontally launched marble and a marble in free-fall, so I recorded some video before school.

 

Earth Science: Energy Conservation

Students whiteboarded their predictions for the scenarios in PhET’s Energy Skate Park I’d given them Friday, then we tested predictions and discussed the results. We especially focused on the total energy bar to get the idea of conservation of energy.

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