Materials, Method, and Procedures:
Variables:
Controlled: Environment, Weather, Materials, Projectile, Range Markers, Target size Independent: Type of Catapult Dependent: #1. Range #2. Accuracy. Materials:
Particle board, rope, twine, rubber housing, screws, pencils, rubber bands, sports drink bottle and cap, grouting, washer |
Procedure:
Range: 1. Set up Range Markers (2 ft, 4 ft, 6 ft, 8 ft, 10 ft, 15 ft) 2. Take catapults, and choose one to test first 3.Load then fire catapult 4.Find range, then record data 5.Repeat for each catapult (3 times) 6.Find mean for each catapult. Accuracy: 1.Set up target 2. Take catapults, and choose one to test first 3.Load then fire catapult 4.Find where projectile hit, then record data 5.Repeat for each catapult (3 times) 6.Find mean for each catapult. |