Rockets; Video Analysis

Questions

  1. What is the influence of reaction mass (water in the two-liter bottle) on the height a two-liter bottle will travel at a constant pressure?
  2. What is the influence of reaction mass (water in the two-liter bottle) on the maximum velocity a two-liter bottle will travel at a constant pressure?

Materials

Rocket launcher

Procedures

Build a rocket as per the instrucitons in the Sourebook for Teaching Science.

See Kelly Castillo's students' rockets. (alternate page)

Enrichment - Explore with Rocket Simulator

Rocket Launch & Projectile motion Analyzed with VideoPhysics App

  • Download the following Apps to your phone or pad
    • Video Physics (video analysis)
    • Inclinometer
    • Motion-X GPS
    • Wind Speed (annemometer)
    • AccelMeter (accelerometer)
  • Record Data
    • Position the rocket launcher so that it is pointed vertically. Check using your inclinometer app in your mobile phone
    • Record the windseed using your mobile wind spee App
    • Record your precise GPS location using the GPS App
    • Using your accelerometer App in your mobile device, determine the maximum acceleration obtained by jerking your device quickly. Record in the table. By doing a video analysis of the rocket you can determine its acceleration and compare with your tests on your mobiel device.
    • Video the trajectory of the rocket.
      • Plot the position of the rocket at each frame
      • Plot position vs. time and velocity vs. time using Video Physics
      • Upload Graph of rocket launch generated by analyzing the flight in Video Physics to our shared dropbox folder.
    • Video the trajectory of a tennis ball tossed straight in the air
      • Plot the position of the rocket at each frame
      • Plot position vs. time and velocity vs. time using Video Physics
      • Upload Graph of rocket launch generated by analyzing the flight in Video Physics to our shared dropbox folder.

Discussion

Enter the following answers in the electronic quickwrite.