day 3

today in class we used a photogate to measure how long it took dominoes set up at various distances apart from each other, to to fall a certain distance predetermined by the distance between each domino. We set the dominoes up at distances 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, and 4.5 centimeters apart.