Unit Activity_ Kinematics 2

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Benedictine University *

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12A

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Physics

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Dec 6, 2023

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11/9/23, 10:18 AM Unit Activity: Analyzing Projectile Motion https://f2.app.edmentum.com/courseware-delivery//ua/49828760/45372714/aHR0cHM6Ly9mMi5hcHAuZWRtZW50dW0uY29tL2xlYXJuZXItdWkvc2Vj… 1/3 Task 1 Analyzing Projectile Motion To begin your activity, open this Tracker experiment: Snowboard Jump . Click play to watch the video. The other video controls allow you to rewind the video or step forward or backward one frame at a time. Part A Describe the motion of the snowboarder in the video. Answer: In the video we can see that the motion of the snowboarder is in two phrases. In the first phase, the snowboarder goes up a ramp with a diagonal velocity which means that it has both a vertical and horizontal component. In the second phase, the snowboarder is subject to acceleration due to gravity which means that he is now acting projectile Space used (includes formatting): 374 / 15000 Part B For this activity, you'll analyze the motion of the marked spot on the skateboarder's leg. For each dropdown labeled “cm” or “model cm,” change the option to “Legs.” In each frame containing a plot or table, you can use the buttons at the top of the frame to choose whether it shows a plot (graph) or a table. If it is showing a plot, you can select the y -axis label to choose which measurement to plot. See how to change the graph and table options. Now look at the graphs for the horizontal and vertical displacement of the legs against time. How do the two graphs, x vs. t and y vs. t appear? What can you say about the displacement of the snowboarder?
11/9/23, 10:18 AM Unit Activity: Analyzing Projectile Motion https://f2.app.edmentum.com/courseware-delivery//ua/49828760/45372714/aHR0cHM6Ly9mMi5hcHAuZWRtZW50dW0uY29tL2xlYXJuZXItdWkvc2Vj… 2/3 Answer: The graph of x vs time shows that the horizontal displacement is linear, implying that equal displacementchange is in the negative direction. The graph of y vs time shows that vertical displacement occurs in two phases. The first phase where the vertical displacement is linear before the snowboarders leave camp. The second phase where the vertical displacement follows a projectile motion after the snowboarderleaves the ramp. Space used (includes formatting): 459 / 15000 Part C Now, observe the graphs of the horizontal and vertical components of velocity versus time. Change the graphs to show v vs. t and v vs. t . What do you observe about the velocity components of the snowboarder before and after time t = 0? Answer: The graph of vxvs time shows that the horizontal velocity is almost linear before t=0 but no longer after t=0, indicating that the snowboarder is slowing down towards the end. The graph of vyvs time shows that the snowboarder is accelerating in the positive direction before t=0 and continues to do so until the velocity becomes negative. This demonstrates the effect of gravity. After t=0, we can see that vy is almost linear. Space used (includes formatting): 458 / 15000 x y Part D Now, change the graphs to observe horizontal acceleration, a vs. t and vertical acceleration, a vs. t . What can you say about the horizontal and vertical accelerations? x y
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