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Teacher-Created Lesson Plan

Soccer Kicks: A Real vs. Ideal Projectile Motion Experiment

Each student will kick a soccer ball and measure its initial launch speed and angle. By applying physics equations derived in class, students predict the range of the ball and compare it to actual range. Do your calculation match reality? #STEMchallenge
Lee C.
Classroom teacher
Bethel Park High School
Bethel Park, United States
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My Subjects Science

Students will be able to...

  • work collaboratively with a partner to kick a soccer ball to record and organize data
  • collect speed and launch angle data for the kicked ball using a smartphone or other device
  • apply the kinematic equations learned in class to predict the horizontal range of the ball (i.e. how far away the ball lands from the kicker)
  • measure the actual horizontal range of the ball
  • construct a data visualization (histogram, scatter plot, etc.) comparing the predicted and actual range values for the entire class
  • create a plausible explanation that describes the discrepancy in the data 
  • present their findings to an audience using digital media
English Language Arts
Grades 10 – 12
All Notes
Teacher Notes
Student Notes

1 Hook: Can we use the equations we learned in class to predict the flight of a soccer ball? Do the equations really work in real life (in your favorite sport)?

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The teacher will lead a sports discussion to pique student interest in the activity. Any sport with a launched ball is appropriate (e.g. football, soccer, baseball). The teacher will use questioning tactics to engage students and elicit responses to, including but not limited to:

1. How many of you play a sport such as football, baseball or soccer?

2. Have you ever watched a game on TV, such as baseball or football, where the announcers give statistics about the ball (e.g. hang time of a football punt, or the distance a home run ball traveled?)

3. Do you think the kinematic equations/functions we derived in class, which typically apply to ideal conditions, could be used to calculate the trajectory of a real, launched ball?

4. How accurate do you think these equations are in a "real-life" situation? In other words, do you think there's any difference in our predicted values vs. the real world measurements? 

5. To find out, we should generate some data, visualize and analyze it and draw our own conclusions.

Student Instructions

After the motivating discussion, the students are invited to visit YouTube.com for a few minutes (teacher discretion) and search for soccer, football or baseball highlights that show the characteristics of projectile motion as previously discussed in class. Specifically, students should note any discrepancies and departures from the ideal cases we have been studying in class and solving as homework problems. 

2 Direct Instruction: How We Will Collect Our Data

The teacher will explain the steps required in order for each team of three students to collect data that will be used for analysis, including how to:

  • download the Adidas Snapshot app (free, iOS and Android) to their smartphone or other device from the appropriate app store.
  • use the app to record and collect data (speed and launch angle) for a soccer kick. 
  • apply the proper equation derived in class that predicts the range of the ball and show the appropriate number substitutions from the app data, including converting units (mi/hr to m/s)
  • measure the actual distance the ball travels in meters
  • work with a team to enter in their data points into a shared resource such as Excel Online or Google Sheets or Tableau Public
  • create a data visualization that allows students to discover trends 
  • form  a conclusion when comparing the ideal vs. real measurements
  • communicate the results of the experiment in an appropriate digital form


Student Instructions

Students will need to complete the following steps in order to be successful (note: students may collect multiple data points as time permits):

  1. Students should download the Adidas Snapshot app to their smartphone or other device prior to reporting to the athletic fields for this activity.
  2. Students should review the range equation as derived in class, and practice its use with a sample problem provided by the teacher.
  3. Students should review the factor label method to convert miles per hour (mi/hr) to meters per second (m/s) with a sample problem provided by the teacher. Students should have access to their laptops/Chromebooks and the shared spreadsheet document for the data entry and analysis part of the experiment.

3 Guided Practice: Collecting the Data

Teacher should accompany students to the athletic fields or other open area, distribute soccer balls to each team of three and monitor student work. Teacher should provide technical and organizational assistance as needed while students generate and record the data for this experiment.

Student Instructions
  1. Students should work in teams of three: person one will take the kick, person 2 will use the app to collect the launch data (speed and angle) while person 3  watches the flight of the ball and locates its landing spot. (These roles will alternate so all get a turn to kick the ball and record a data set. Multiple kicks may be taken as time allows or as desired by your teacher.)
  2. In a lab notebook, person 2 should record the launch speed in miles per hour (mi/hr) and angle (in degrees) as reported by the app while person 3 measures and records the distance the ball traveled in meters.
  3. Students should rotate their roles in the group until all have had a chance to kick. If time allows, continue taking data until your teacher directs you to stop.
  4. Once the required data has been collected, return to the classroom to perform your calculations and analyze your data.

4 Independent Practice: Data Analysis and Conclusions

The teacher will provide a spreadsheet template for students to contribute their data. Aggregate data will be used so students can see trends and patterns more readily. Teacher should provide assistance as needed. After data has been entered, teacher should direct students to download a copy of the aggregate data so each team can create a data visualization and perform their analysis of the data independently. 

Student Instructions
  1. Students will enter two data points into the shared spreadsheet document: the calculated (ideal) range and the actual (real), measured range. Therefore, students must use the range formula from the kinematic equations to calculate the predicted range. 
  2. To calculate the ideal range: From the app data, you will have a launch speed in miles per hour (mi/hr). For the range equation to work properly, this speed must be converted to the base SI unit of meters per second (m/s). Use the factor label method to perform this conversion. 
  3. Now that you have the speed in units of m/s, apply the range equation by substituting in the proper values. Recall the range equation derived previously in class: R = [ Vo^2 * sin(2*Ø) ] / g, where Vo is the launch velocity in m/s, Ø is the launch angle in degrees, and g = 9.8 m/s/s, the acceleration due to gravity.
  4. In the common spreadsheet document, enter your value from step 8 above into the "Ideal" column, and the measured value of the range in the "Real" column.
  5. Repeat steps 2, 3 and 4 until all your data is entered.
  6. When the entire class has finished entering their data, your team should download a copy of the spreadsheet so you may begin analyzing your data.
  7. Your task is to turn the spreadsheet with columns of numbers into a data visualization. You might choose a scatter plot graph, histogram, etc. Your team should decide what visualization best illustrates the trend and relationship between the numbers. Be creative here!
  8. From your visualization, discuss what conclusions you might reliably draw from the presented data. Be sure to account for all the trends you might find, and include a plausible explanation for any outliers you might observe.

5 Wrap-up: Reporting Your Experimental Results

The teacher will provide guidance and assist students as needed to create their final project in order to report their results. Students should be prepared to present their projects and findings in a 5 minute presentation to the class. Teacher should encourage creativity in the data visualizations and allow any appropriate tool for the final project.

Student Instructions

Students should create a coherent, visually interesting and scientifically sound presentation to report their findings to the class. Specifically, your project must include:

  • An explanation of the problem to be investigated.
  • A description of your experimental method.
  • The data that was collected.
  • The calculations that were necessary.
  • A visualization of the dataset.
  • The analysis of your data.
  • The conclusions you drew from your data: Do the equations used in class to predict the ideal behavior of a projectile match the observed results in the "real world?" Defend your answer with credible causes for any discrepancies, including any outliers.
  • Questions to consider: From the same experimental setup, are there other data points that could be collected? What trends might they show? Can you propose an extension to this experiment?

You may complete this project with a Prezi, PowerPoint deck, Tableau visualization, iMovie, etc. The choice is yours: Be convincing and be creative! Good luck!