# Introduction to motion physics lab

Studying Motion and also Motion-Graph Matching

Introduction: One of the the majority of reliable approaches of describing activity isto plot graphs of distance, velocity, and also acceleration vs. time. From such a graphical depiction, it is possible toidentify in what direction a things is going, exactly how quick it is relocating, exactly how farit traveled, and also whether it is speeding up or slowing dvery own. In this experiment,you will use an ultrasonic motion detector, connected to a computer through aLabpro, to recognize this information by plotting a actual time graph of your movement as you move towards or awayfrom the activity detector.

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The movement detector actions the moment it takes for a highfrequency sound pulse to travel from the detector to any kind of solid object and also back.Using this round-trip time and the rate of sound in air, you deserve to determine thedistance to the object; that is, its place. Logger Pro will certainly perform this calculation for you. It can then usage thereadjust in place to calculate the object�s velocity and also acceleration. All ofthis indevelopment have the right to be displayed either as a table or a graph. A qualitativeanalysis of the graphs of your activity will certainly help you construct an expertise ofthe ideas of kinematics.

Objective

�Analyze the activity of a student walking across theroom.

�Predict, sketch, and test distance vs. time kinematics graphs.

�Predict, sketch, and test velocity vs. time kinematics graphs.

Apparatus: Labpro, logger pro, motion detector,masking tape, meter stick, Deskoptimal computer

Graphing Motion: X-t, v-t and A-t Graphs

The graph below mirrors exactly how the place of the bicyclechanges through time. Below this graph�sketch what the velocity vs time and listed below that the acceleration vs timegraphs. Make sure the axes and times line up. Calculate the velocities andaccelerations and also put those in the graphs. Sjust how your job-related to your teacherprior to you continue.

Part 1. The Motion Sensor: Getting to understand your sensor.

The Motion Sensor provides the reflection of ultrasound todetect an item. The Motion Sensor does not correctly detect objects closerthan 0.4m and the maximum range is 6.0m. In utilizing the Motion Sensor, it isessential to realize that the ultrasound is emitted in a cone about 30 degreeswide. Anypoint within the cone have the right to reason a reflection and probably anaccidental measurement.�

Set up the Vernier LabPro interconfront to your computer as demonstrated by your instructor.

Connect the movement sensor into Dig/Sonic 1.

Open LoggerPro file titled �P10 Lab 2 Motion.� Position versus time (x-t), velocity versus time (v-t) and acceleration (a-t) graphs have to show up in addition to a documents table.

Stand about � meter from the sensor and click �Collect� and then relocate away and then back towards the sensor. Verify that you are collecting correct information and also generating appropriate graphs. Discuss this with your lab partners and also ask the teacher if you require assist.

Notice that tbelow are 2 settings on the sensor for narrow or wide ranges of sensing. Determine which setting you need to usage. (When would you use wide or narrow?)

To recognize the accuracy or the level of trust you deserve to have actually with the sensor and also computer, attempt setting up a stationary object on your track at a suggest even more than 50cm. Take a number of readings and also view if and also just how the readings change. Are you readings consistent?

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7.��� Produce a graph of your motion once youwalk amethod from the detector via continuous velocity. To execute this, stand about1m from the Motion Detector and also have actually your lab partner click

.Walk progressively ameans from the Motion Detector once you hear it begin to click.

8.�� Lay out below what the distance vs. time graph will look prefer if youwalk quicker. Check your prediction via the Motion Detector.

Part 2. The Motion Sensor: Matching graphs

1. Open the folder �Motion Lab� inthe P10 Lab folder.. Launch� �4A_Match1�file and also a graph� presented listed below shouldappear. This is a position vs time graph.

2.�� Describe just how you would certainly walk to create thistargain graph.

3.� To test your prediction, select a startingposition and stand also at that point. Start data repertoire by clicking

.When you hear the Motion Detector start to click, walk in such a method that thegraph of your movement matches the tarobtain graph on the computer system display screen.

4.� If you were not successful, repeat theprocedure till your activity very closely matches the graph on the screen. Publish thegraph via your finest attempt. Attach that graph to your lab report.

5.����� Launchthe file 4A_Match2 and also the adhering to position vs time graph need to appear.

6.�� Describe how you would certainly walk to develop thistarget graph.

Repeatmeasures 5 & 6. Print the graph via your best attempt. Attach that graph toyour lab report.

7. Launch thefile 4A_Match3 and also the adhering to velocity vs time graph must appear.

8.�Describe exactly how you would walk to create this taracquire graph.

9.� To test yourprediction, select a starting position and stand at that point. Start Logger Pro by clicking

.When you hear the Motion Detector begin to click, walk in such a way that thegraph of your motion matches the targain graph on the display screen. It will certainly be moretough to enhance the velocity graph than it was for the distance graph. Printthe graph with your best attempt. Attach that graph to your lab report.

10.��� Launchthe file 4A_Match4 and the complying with velocity vs time graph need to appear.

11.� Describe just how you would walk to create thistarget graph.

12. Publish the graph through your best attempt. Attach that graphto your lab report.