Day 6: Impulse, Big Pendulum, & Alka Seltzer https://t.co/yj8aujPpJe #teach180
— Marta R. Stoeckel (@MartaStoeckel) September 12, 2017
Day 6: Impulse, Big Pendulum, & Alka Seltzer https://t.co/yj8aujPpJe #teach180
— Marta R. Stoeckel (@MartaStoeckel) September 12, 2017
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