PHYSICS 1021 Temple University Lab 2 Dimensional Motion Questions Discussion

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PHYSICS 1021

Temple University

PHYSICS

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There are 2 graphs and 2 tables in the file below showing the data from a ball being thrown. Answer all the questions based on the information on the graphs. This is 2 Dimensional Motion, add any formulas that it asks for.

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Lab 3 2 Dimensional Motion ALEXANDER GUZMAN PHYSICS 1021 Question 1. What is the time value when the ball in your video is at its maximum height? Question 2. Is the time value when the ball in your video has zero y-velocity the same as the time value for when it is at maximum height? Would you expect them to be the same? Explain. Question 3. Which general kinematic equation is most similar to the fit equation for the x position vs time? Which kinematic equation is most similar to the fit equation for the y position vs time? Question 4. For the y-velocity vs time graph, how do you find the y-acceleration from the fit? What is the acceleration expected to be for such an object in free fall? a) Report your experimental value for the acceleration due to gravity g in the Data and Analysis section of your lab report. Question 5. What is the x-acceleration according to your graph and fit of the x-velocity data? What would we expect it to be in this scenario? b) For your lab report discuss whether the fit results from your y-velocity graph agree with how the data changes with time in your y-acceleration graph. Question 6. Using only two pieces of information 1) the framerate and 2) the position points you marked, Capstone was able to calculate the velocity and acceleration. Briefly explain how the velocity and acceleration can be obtained this way using the definition of velocity and acceleration (v = x/t and a = v/t). Note that the framerate is the number of frames per second in the video.
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Explanation & Answer

Attached.

Lab 3 2 Dimensional Motion
ALEXANDER GUZMAN
PHYSICS 1021

Question 1. What is the time value when the ball in your video is at its maximum height?

0.633 seconds
Question 2. Is the time value when the ball in your video has zero y-velocity the same as the time
value for when it is at maximum height? Would you expect them to be the same? Explain.

Yes. The time values are the same when the ball has zero Y- Velocity and when is at the maximum
height. This is because at maximum vertical height, the velocity of bodies is zero.
Question 3. Which general kinematic equation is most similar to the fit equation for the x position
vs time? Which kinematic equation is most similar to the fit equation for the y position vs time?
1

For Horizontal projection, the fit equation for x-position is 𝑠 = 𝑢𝑡 + 2 𝑔𝑡 2 while Y- position is Xposition is 𝑉 2 = 𝑢2 + 2𝑎𝑠. The values of 𝑠 gives the positions of x and y .
Question 4. For the y-velocity vs time graph, how do you find the y-acceleration from the fit? What
is the acceleration expected to be for such an object in free fall?
a)...


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