1C10  Velocity
            .06 Velocity of a Rolling Ball
            .08 Constant Velocity Vehicle
            .23 Velocimeter
            .31 Ball and Strobe
            .32 Strobed Fan
1C20  Uniform Acceleration
            .10 Ball and Feather
            .30 Car on Inclined Track
            .32 Heavy and Light Gliders
            .38 Acceleration of a Ball in Freefall
1C30  Measuring g