TITLE: NUMBER OF PAPER CLIPS ON NOSE OF A PAPER AIRPLANE VS. VELOCITY AND SPEED

Transcription

1 EXPERIMENT 2: CHAPTER 3: LINEAR MOTION (CONSTANT VELOCITY) TITLE: NUMBER OF PAPER CLIPS ON NOSE OF A PAPER AIRPLANE VS. VELOCITY AND SPEED Purpose: To determine if the number of paperclips on the nose of a paper airplane affects the velocity and speed, measured in seconds. Background Information/Literature Review: Fill in the appropriate information from the textbook or online sources that applies to this investigation. Make sure to cite the sources. Be sure to discuss the difference between distance and displacement, speed and velocity, vector and scalar measurements, and different manners that physicists use to describe direction in measurements.

2 Background Information / Literature Review / Pictures / Equations (continued): Citations (including pictures):

3 Hypothesis: If the number of paperclips on the nose of a paper airplane increases, then the speed will (increase, decrease, stay the same) in a (linear, exponential, logarithmic) mathematical relationship, and the velocity will (increase, decrease, stay the same) in a (linear, exponential, logarithmic) mathematical relationship. (Fill in the appropriate words for your hypothesis.) Materials: paper airplane (you can download instructions on the internet if you do not know how to make one) stopwatch/cell phone timer 3 jumbo paperclips a partner to work the stop watch for you yarn (keep the yarn for use in other labs) ruler (in centimeters) Procedure: 1) Make a paper airplane. On the tip of the nose, place one jumbo paper clip. Move to an open space with little wind. Mark a starting line for each of your trials. Have a friend time how long the paper airplane stays in the air from the time of release from your hand to the time the plane comes to rest. 2) Because the airplane probably did not fly in a straight line path, stretch out the yarn to approximate its path. Use the ruler to determine how much string was used and write this value in as Distance Traveled. Then, use the yarn to stretch straight from the starting line to the finishing point. Use the ruler to determine how much string was used and write this value in as Displacement Traveled. 3) Using Distance / Time, find the Speed. Using Displacement / Time, find the Velocity. 4) Repeat this procedure two more times using 1 paperclip on the end of the airplane. Repeat this procedure using 2 paperclips on the nose of the airplane, and then three paperclips on the end of the airplane. Photographs copyright of Stephanie A. Blake

4 Picture/Labelled Diagram: Insert 1-3 pictures of yourself performing the experiment into this lab report for the instructor to ascertain how the investigation was conducted. Data Table: Number of Paperclips on the Nose of a Paper Airplane versus Velocity and Speed TRIAL 1 Clip Trial 1 1Clip Trial 2 1 Clip Trial 3 2 Clips Trial 1 2 Clips Trial 2 2 Clips Trial 3 3 Clips Trial 1 3 Clips Trial 2 3 Clips Trial 3 Time Aloft (s) Distance Traveled (m) Displacement Traveled (m) Speed (m/s) Velocity (m/s)

5 Graph: Make a line graph of average Speed and Velocity (as two different lines) on the y-axis and number of paper clips on the x-axis. Make a line/curve of best fit for the speed and velocity to help you determine if there is a relationship between number of paperclips and speed/velocity. You may substitute a computer made graph using Microsoft Excel or some other software if you prefer.

6 Data Analysis: This section is also known as Show Your Work. Here is where you show how you performed the mathematics of your experiment. Be sure to include units in your measurements. This is also where you will find the slope of the line for your graph (in decimal form including units) as well as the equation of the line IF the relationship between the dots is in fact a line.

7 Conclusion: This is a series of several paragraphs written with correct grammar that answers the following questions in complete sentences. You must use formal academic language. (Do not use I, me, we, our, etcetera.) What was the independent variable? What was the dependent variable? What were the controlled variables? Did you achieve your purpose? What was the relationship between variables? How accurate was your hypothesis? Why was the hypothesis was correct/incorrect? What events in the experiment were expected? What events in the experiment were not expected? What human error occurred (i.e. measurement errors, significant digit errors, mathematics errors, etc)? What equipment error occurred (i.e. friction, air resistance, improper calibration, broken equipment, etc)? How could the lab be improved? How could this lab apply to physics in the real world? What similar experiment could be done next to further study this phenomenon? What would be the independent, dependent and control variables? What would the purpose be? What is the hypothesis concerning the relationship between the dependent and independent variables in this experiment?

8 Application The Physics of Daily Life: Take a picture with a cell phone, draw a picture, or download a picture from the internet of this idea occurring in your world. Imbed it in this laboratory report. Explain in words how the phenomenon in the picture applies to this concept. Be sure to use appropriate equations, units, vocabulary and concepts when possible to support your photograph.