Projectile Motion Lab Report: Why Do You Need This?

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The given projectile motion lab report example will show you how one should properly examine the motion of any object. Furthermore, you’ll get familiar with the right projectile motion lab report format.

As you might have guessed, we should start with an introduction. Well, most probably, you’ve already learned enough about the motion of an object in one dimension – on an inclined or horizontal surface. You’ve explored how it’s used to falling under the influence of the earth’s gravity.

Now, your primary objective is to evaluate the behavior of a projectile. In this particular case, the object is moving in space due to some launching force. The given object is capable of undergoing motion in two dimensions at the same time.

With the help of the video analysis features of Logger Pro, you’ll compare features of the position-time as well as velocity-time graphs with those you’ve studied before.

Now, let's have a look at your objectives in this experiment:

  • Make use of video analysis techniques in order to obtain velocity, position, and time data for your projectile.
  • Analyze the position with time as well as velocity with time graphs for both horizontal as well as vertical components of the given motion.
  • Determine appropriate equations for the position with time and velocity with time graphs for both vertical and horizontal components of the given motion.
  • Have the parameters in those equations for the position with time as well as velocity with time graphs related to their physical counterparts within the system.
  • Have horizontal as well as vertical components of the projectile’s motion related to any forces acting on the projectile when it’s moving.
  • Make a movie about this motion.

Let's see what you should use in your experiment:

  • A tripod or other methods of keeping your camera steady when capturing videos.
  • A digital video camera, however, you can also use a digital still camera, which can shoot in the movie mode.
  • Specialized devices and software programs to deliver a ready-made movie from the camera to your PC.
  • A meter stick or anything else capable of providing scale.
  • A projectile (here, you can use a ball or any other similar object).
  • Video editing software products, such as |QuickTime Pro or iMovie.

Now you should use your Logger Pro to emulate the motion of the projectile in several dimensions. Using corresponding tabs and tools of the program, you can set the desired position of the object, the way it moves, and observe the expected result in both Y and X positions.

Then, you can shoot a nice movie, depicting a projectile traveling in space. For this purpose, you’d better use a plain background to get a sufficient contract with your projectile. Don’t underestimate the importance of lighting! Your digital camera should be installed on a tripod. Make sure the plane of motion is set perpendicular to the view.
Properly position the camera, so you could avoid unwanted parallax and scaling problems. Utilize the zoom option for filling the screen with the motion.

The object chosen for scaling should be in the same plane as the motion of your projectile lab report.

Once, the movie is shot, make use of directions, which accompany your camera to transfer the ready-made clip to your PC. If you’ve made more vide than you require, make a more manageable length using video editing software such as iMovie or QuickTime Pro. The ready-made clip can be used for your analysis.

Evaluation of data in the projectile motion lab report

Once your experiment is over, it’s time to evaluate your results.

  • Yours require examining the graph of your X-position with time. Well, if it’s linear, you should fit a straight line to the data. If the graph’s slope changes abruptly, you should fit separate straight lines for every portion of your graph, which is linear.
  • Then, you need to write the equation fully describing the X-position with the time behavior of the ball in every segment. Don’t forget to include units.
  • Based on what you see, you require describing the horizontal component of the projectile’s motion.
  • After this, you should examine the graph of Y-position with time. You need to fit a proper curve to this graph. Make the equation describing the Y-position with the time behavior of the ball in the first segment. Like in the previous case, make sure you’ve included units.
  • Based on what you’ve already learned, thoroughly describe the vertical component of the projectile’s position.
  • The next step is to test your analysis in the previous step. Here, you should examine the graph of Y-velocity with time. Yours require fitting a straight line to the first portion of the graph.
  • Evaluate the rate of change of the Y-velocity as a function of time
  • Finally, you require explaining the differences in the vertical and horizontal components of the projectile’s motion.

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