Nerf+Gun+Project

Ross and Anson __**Lab Goal:**__ The goal of this lab is to determine which projectile launcher will provide the most force to launch a equally massed ball from two different launchers.

__**Procedure:**__

1. Get two different projectile launchers. One Small and one large. 2. Put them at an angle of 45 degrees becuase that angle will give you the longest range. Make sure you use angle measuring object to be accurate. 3. Take the large projectile launcher and put meter sticks in front of it. 4. Put the marble inside the launcher and launch it 5 times and average. 5.Make sure you have metersticks so you can record how far it goes each time. 6. While launching the marble measure the amount of time it takes for the ball to hit the ground ever since its initial launch. 7. The next step is to get the small launcher and launch the ball that has the same mass as the one used before. Do this 5 times and average. 8. Measure the time it takes for the ball to reach the ground for the small projectile launcher. 9. Make sure you are collecting all of the necessary data so you can use it to find the force of the projectile launcher.

__**Lab Materials:**__

1. Projectie Launcher 2. Meter sticks 3. Angle measuring object 4. Marble 5. Camera 6. Physics Hallway

__**Data:**__


 * SMALL PROJECTILE LAUNCHER:**

SMALL TIME: .67s .76s .66s .69s .63s Average: .682s

SMALL DISTANCE:

2.31m 2.32m 2.32m 2.32m 2.30m Average: 2.31


 * LARGE PROJECTILE LAUNCHER**

LARGE TIME: 1.08s 1.11s 1.07s 1.10s 1.19s Average: 1.11s

LARGE DISTANCE

4.4m 4.9m 4.9m 4.8m 4.7m Average:4.74m


 * Marbles:** Mass of both balls= 8g -.008kg


 * Projectile Launcher Setup Small/Large:**












 * Now....**


 * After we have all of our data we can use it to determine which spring provides the most force, sending the ball the greatest distance.**

__**Calculations:**__ __**Find Acceleration of the ball for small projectile launcher:**__ x y di= 0 ? df= 2.31 ? vi= 0 0 vf= ? ? a= a -9.8m/s^2 t= .682s .682s df=di+vi*t+.5*a*t^2 2.31=0+0+.5(a).682^2 2.31/(.5)=(a).682^2 a=9.93m/s^2 __**Find accelartion of the ball for large projectile launcher:**__ x y

di= 0 ? df= 4.74m ? vi= 0 0 vf= ? ? a= a -9.8m/s^2 t= 1.11s 1.11s df=di+vi*t+.5*a*t^2

4.74=0+0+.5(a).1.11^2 4.74/(.5)=(a).1.11^2 a=7.69m/s^2 __**Now to find the Force that the spring applied to the ball....**__ __Small__: a=F/m 9.93=F/.008 F=.079N __Large__: a=F/m 7.69=F/.008 F=.062N
 * __Conclusion:__**According to our data and calculations, the small projectile launcher provides more force to the ball as compared to the large projectile launcher. Its very surprising actually because our group thought that the large projectile launcher would give it much more force compared to the small projectile launcher. We were able to come to our conclusions through our evidence and data. We were able to measure the distance the ball travled with the large projectile launcher=4.74m and small launcher=2.31m using measuring sticks. We did this five times to have the most acurate answers and then averaged. Next we measured the time using a stopwatch for the large projectile launcher=1.11s and small launcher=.682s/ also did this five times and averaged. Then we measured the mass of the ball which gave us .008kg. We were able to incorpate the numbers into the equation df=di+vi*t+.5*a*t^2. We used this equation mainly becaue we had the variables of distance, acceleration, and time. After getting an acceleration of 9.93m/s^2 for the small launcher and 7.69m/s^2 for the large marble I was able to find the force using the equation a=F/m. I allready knew the mass of the ball which was .008kg and I multiplied it by the acceleration of the balls. I finally got a result proving that my small launcher provided more force than the large one. The reason to why this happened is becuase, the small projectile launcher allowed the ball to travel a much shorter distance but at the same time a shorter time. While the large projectile launcher gave more distance but also more time.I can conclude that the two launchers have relatively the same amount of force but the small projectile launcher wins this battle.

This was a very insightful experiment because it completely changed our view on how physics changes certain things. Most people would say that the larger projectile launcher would produce much more force than the smaller projectile launcher, but that is obviously not true.