1. Procedure:<br />1. Gather the materials: 3 sets of string (3 pairs), scissors, fireman, pencil, plastic trash bag, sharpie, ladder, ruler, stickers, and meter stick. <br />2. Fold trash bag so there are four layers.<br />3. Cut the square out of the four layered trash bag (20cm by 20cm). You should have four 20cm by 20cm squares.<br />4. Punch holes in each of the square’s corners and add a hole in the center of each parachute canopy. Cover the holes with stickers and re-punch the holes. This will help the durability of the holes so they will not rip.<br />5. Cut two pieces of string for each of the following lengths: 10cm (control), 20cm, 30cm, 40cm.<br />6. Tie fireman to parachute by the string which is tied to the opposite corners of the parachute.<br />7. Have one of the member climb the ladder until their hand is 3 meters above the ground. <br />8. Drop the parachute<br />9. Time the parachute. Start the timer from the time it leaves the member’s hand to the time the fireman hit’s the ground. <br />10. Record in notebook all of the trails.<br />11. Repeat steps 7 through 8 for the remaining string that have already been cut. Each length should have a total of 3 trails.<br />12. Find the mean (average) for each of the lengths of string including the control. <br />Conclusion:<br />I claim that, If the length of the string changes then the time of the parachute to fall 3 meters will increase. I reject my hypothesis.<br />My evidence is as the length of the string got longer the speed got faster when fallen from the 3 meter height. I know this because when a 10cm string was dropped, it was 2.61 seconds, 20cm, 2.30 seconds, 30cm 2.25 seconds, and 40cm 1.75 seconds. (This is the mean for each length of string.)<br />My reasoning is that as the 10cm string the air seemed to be sent up into the canopy which was causing the time in the air to go slower. I know that the longer the string the faster the string will fall.<br />
