What did we do?

We decided to measure the speed of the solar car at different times of day, when the sun was at different points in the sky. We marked off a distance of 40 feet on a flat, level sidewalk and recorded the time it took the car to travel the distance. We took the average time for two trials, every hour from 8:00 a.m. to noon. We also measured the sun's angle each time we did a speed trial. We tied a string to the top of a tall stick. I held the stick straight up on the sidewalk and Isaac pulled the string tight until it touched the end of the stick's shadow. He measured the angle of the string using a protractor. more...