testing_your_catapult.pdf - Testing your Catapult By Derek Wulff Free for use Email me at [email protected] Let’s test the catapult to see what it can

# testing_your_catapult.pdf - Testing your Catapult By Derek...

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Testing your Catapult! By Derek Wulff - Free for use . Email me at [email protected] Let’s test the catapult to see what it can do! You have a few variables that will make a difference in the distance the projectile will go. 1. You can change the size (weight) of the ball – a larger plasticene ball will have an effect on how far it travels. 2. You can change the type of the ball as an experiment. You have a puff ball and a Styrofoam ball in the kit, compare the distance each of them travels! You can also go to a craft store and get a variety of sizes of Styrofoam balls for some interesting discoveries. 3. You can turn the tensioner and the twist the rope tighter, but not too tightly, or the line will break– so be careful! 4. You can change the number of pads at the crossbar. Adding wood to make the swing arm hit the crossbar sooner will change the trajectory (angle of the projectile) as it leaves the swing arm. Remember to change only one variable at a time, and to test it about 10 times, measuring the distance each time. Record your results on a table, then make a line graph to see if there is a pattern. Be sure to write your steps down on the worksheet.

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• Spring '14
• DaleCDeubler

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