Projectile Motion Lab Report
Projectile Motion
Intorduction; This is a summary of the entire lab report. If you read only this section a year from now, or show it to someone, They should have a good idea of what was done, how it was done, and what the results were.
In several paragraphs, explain
The theory behind projectile motion, e,g. The horizontal and vertical parts are independent, gravity only affects the vertical motion. etc.
What we did in each experiment. Give the equations we used in each part and what you used them to solve for. You can refer to the diagram on page 115.
Your results/conclusion. Did the results make sense/fit the theory. i.e. did our predictions agree with reality? what do we learn from this lab?
Equipment: list the materials used and briefly explain how each was used. Include a diagram or picture of the projectile launcher setup, and go into more detail about its use. (setting the angle, loading the ball at the right range setting, launching). if you did not take a photo, you may use http://bit/115Gv8k (those are ones after the slash) as long as you cite PASCO’s website as the source.
Procedure
In list form, describe what you did in each part, e.g., 1) set up launcher. 2) take test shot. 3) put down carbon paper. etc. (your procedure should be more detailed than that). if someone follows your procedure, they should be able to repeat your experiment.
Conclusions
show the calculations for the following: In part A, how to get t and v, how to get x and y max for the 30 degree trial.
Error Analysis
Show the calculation for the percent difference between your observed and calculated ranges (x) and ymax for the 30 degree trial. Remember, percent difference between two measurements A and B is IA-BI/ 1/2(A+B) * 100 %. ( the absolute value of their difference divided by their average, times 100 % ).
Results:
Discuss your data and any trends you observed. Were your shot grouping close? In part B, as you increased the angle, what happened to your range and Ymax? for a given angle, were x and ymax observed fairly close to the calculated value?
Conclusions
Explain clearly what you predicted or expected your results to be, and compare your actual results/measurements against your expectations. Do your measurements agree with the theory of projectile motion you discussed in the introduction? Cite numbers to support your statements (e.g. low % diff is good).
Talk about the validity of the experiments-did you minimize potential sources of error? Name a few possible error sources (e.g. the observed value of Ymax was not measured precisely). and what effects they might have on the experiment.
Give suggestions for improving the experiment, or discuss what you might do differently if you had to do it again.
Questions
Type out and answer the ” Analysis and Interpretation” questions on page 116. Hint for # 1: Find Vx and Vy, then Vf sort (Vx^2 + vy^2) and the angle is arctan (vy/Vx). Skip the first # 3.
Overal clarity, grammer and spelling has 3 points.
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