The purpose of the lab is to explore some of the variables that influence projectile motion using a Rubber Band Cannon and launching rubber bands and measuring its horizontal distance and angle at which the rubber bands has been launched..
Materials:
Materials used for the lab were a Cardboard Box, a 30cm ruler, rubber bands, a measuring tape, tape, a pencil, a paper protractor cut out, and scissors.
Procedure:
For the lab, scissors were used to cut the paper protractor cutout. Then, tape was used to tape the paper protractor to the cardboard box so that the 0° line is approximately 2.5 cm from the bottom of the box in order to launch the rubber bands. With the tip of a sharp pencil the cardboard box was poked to form a hole over the paper protractor and into the cardboard box at the point where the 90° and 0° lines intersect. The pencil was then pushed …show more content…
One of those factors may have been when the rubber band was pulled back it was not exactly at the 12 cm mark of the ruler, so it could have been pulled too much or too little. A second factor would be that the paper protractor was not taped to the cardboard box exactly at 90°. This affects the angle in which the rubber band was launched. A third factor would be the distance that was measured with the measuring tape from the box to the rubber band, because they might not have been very precise measurement due to the smaller increments. Apart from that problem from the measuring tape was when measuring the distance of the rubber band, the length of the measuring tape was shorter than the distance that the rubber band landed, so the mark at the end of the measuring tape was then continued to where the rubber band had landed. At 30°, the rubber band was the angle at which the rubber band reached the farthest distance, because it had the most forward and upward force and the one shot had the shortest horizontal distance, because it had less forward