Force vs time diagram for stepping on force plate, waiting, jumping up and landing back on force plate, waiting, stepping off.
Does a jar of flies weigh more if the flies are at the bottom than if they are flying around inside? Demo with helicopter and force plate.
Coin in balloon, nut in balloon demos of inertia, friction, force of inside surface on object.
Went over end of chapter questions from Chapters 4,5,6.
Test Tomorrow.
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