PROJECTILE MOTION
Elizabeth Beck
Lab Partner: Allison Butrie
11 April 2014
Lab Partner: Allison Butrie
11 April 2014
Purpose
To predict the range of the projectile and to find the other kinematic qualities.
Theory
Experimental Technique
To start the experiment off, I set up the projectile launcher at a 45 degree angle from the table causing the change in y to be 0.833m. Then, I set up the photo gates and measured the initial velocity of the projectile 10 times to find an average of 3.905m/s. I plugged in the information to the kinematic equation listed above, and solved for T. Then, I derived another equation for R, and substituted T into this large equation to find the estimated range of the projectile. My estimated range was 2.16m. I fired the projectile and unfortunately missed our target, so we moved the target, fired 10 times and measured the new average range to be 2.29m.
Data
Analysis
This is the final equation I used, plugging in both of the time and range equations:
Conclusion
The projectile was close to predicted range, but still 0.13m off. I had to move the paper to make the projectile hit the carbon paper visibly. All of the other kinematic quantities were found and correct, fitting the equations.
References
(n.d.). Retrieved from http://www.sciencebuddies.org/