1. Final Project Brian Conicker Teddy Egnaczyk

2. 1.Setup

3. 1.Setup Continued https://www.youtube.com/watc h?v=qrmJqEmlsaM

4. Materials Ramp: Cardboard, Glue, Wood Rubber Band Cars Popsicle Sticks, Wooden Dowel Rods, Metal Rods, Straws Milk Bottle Caps, Glue, Duct Tape

5. 2. Calculations 1.Elastic Potential Energy -Rubber Band stretched to 30 cm = PE =.9614 J 2. Mechanical Energy -Max speed calculated of Rubber Band Car = 1.1 m/sec -.0228 J 3. Velocity needed to complete loop -Velocity = 2.1 meters / second -=MUST FASTER THAN THE RUBBER BAND CARS

6. 2. Calculations continued 4. Mechanical Energy of Rubber Band Car -.2783 J -Most of the Energy was not transferred to the forward velocity 5. Mechanical Energy of Regular Car -3.08 m/sec = Greater than the necessary speed to complete loop -.511 J of Mechanical Energy 6.

7. 3. Trials -Ramp -Very flimsy -We attempted to support it with wooden blocks -Rubber Band Cars -Sturdy -Worked well except for wheels -With correct adjustments they were able to pick up a velocity

8. 3. Trials continued -Launching Pad -More consistent velocity -Met velocity requirement -Completed loop easily

9. 4.Error Analysis 1.Rubber Band Cars a.Loss of traction on wheels b.Inconsistent application of force from rubber band c.Material / Size of wheels 2.Ramp a.Needed to be more rigid b.Cardboard connection points should have been smoothed out 3.Launching platform a.Inconsistent application of force