Some Physical Measurements

The mass of the vehicle, no batteries, no mass on the pendulum, no circuit, is 805.13 grams.

The mass of the silvered mass used on the pendulum for demonstrations is 161.59 grams.

The batteries, in the battery holder, are 212.62 grams.

Therefore, since the acceleration tests were performed with the batteries and the silvered mass on the vehicle, the total mass of the vehicle during the accelerations tests was 1179.34 grams.

The rolling resistance of the vehicle, as tested for acceleration, is 1.226 Newtons.

The mass of the wooden dowel that may be used as the pendulum is 73.71 grams. Its length is 90.17 centimeters, so it is 0.8175 grams per centimeter.

The circuit board with all components will be from 28 to 43 grams.