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For our project, we will have one person on roller blades skate up to a certain point that we have marked. Then, this person will coast towards another person on roller blades and run into them with an exercise ball. The first person will be timed from the marked point up until impact which will be a certain distance that we can use as data to solve a vivfdat equation because we will also be able to find the acceleration by finding the coefficient of friction and using it to solve an F=Ma equation for the acceleration. We will also be able to find the velocities for the second person because their Vi will be 0 and we can use a vivfdat equation as well to solve for their Vf after calculating the time and displacement using experimental data. For our experiment we will need to use two pairs of roller blades, two stop watches, measuring equipment, tape, an exercise ball and people to perform and record the experiment.

Mr. Eddy Says this looks good. media type="file" key="Movie.avi" width="243" height="243" Procedure 1. Gather the materials needed (two pairs of roller blades, an exercise ball, and a meter stick). 2. Have two people both wear roller blades, and have one person hold onto an exercise ball. 3. Have the person who isn't holding the exercise ball stand facing the person with the exercise ball. Also have a good amount of space between the two people because the other person will be skating and then coasting for 5 meters.4. Have the person who is holding onto the exercise ball skate up to a certain point and coast for 5 meters. 5. The person who is standing still should brace for impact and lower his or her shoulder, so the person's body is prepared to go back and keep the momentum going. 6. Measure the distance that the person without the ball traveled after impact. 7. Repeat steps 1-6 two or three times to get more accurate information. 8. Use a spring scale to pull both people at a constant rate on the ground to find the force of friction. 9. Once the force of friction is found (using Ff = Fn(mew)), you can find the acceleration by using the equation f=ma, and then you can use the acceleration in a vivfdat equation to find the velocity of the moving person. 10. Using the velocities that we found, we solved for momentum to see if it was conserved. In order to do this, we made two separate charts, in which the mass, velocity, and momentum (mass x velocity) were shown for each person. 11. Compare the momentums before and momentums each total momentum to evaluate whether or not momentum was conserved. 12. To see how accurately the experiment was performed, find the percent error by taking the difference between the two total momentums and dividing it by the total momentum before the collision and multiply it by 100. Conclusion In conclusion, our experiment was a success in proving the conservation of momentum because of our very small percent error of .7%. So, this means that the momentum was almost perfectly conserved because we had almost identical momentums from before and after the collision which is what should have happened. But, the experiment also had some sources of error that changed the outcome slightly. During the collision, Teddy and I weren't able to keep our bodies perfectly rigid which caused some of the momentum to be lost during our movement which may have affected the results of the experiment. Also, there was a source of error with the time that we kept with the stopwatch. It was impossible for us to get the perfect time because we didn't have laser timers and had to time by had which allowed for human error of reaction time. This could have effected the results of our experiment negatively as well. But, overall our experiment was a success in proving that momentum is conserved during a collision based on the data that we gathered. Data