R1: Shoot the Monkey
complete setup
R2: Greek waiter tray,
Rotating flames
R3: Marble launch angle,
Ballistic Pendulum
Balls and beans,
Sound in a vacuum
R4: Long cart,
Sound in a vacuum bottles
Air track carts
Suction cups,
Magdeburg hemispheres,
Penny and feather,
Styrofoam and nickle