Lessons & Links
4. Balistic Car
5. Vertical Launch
6. Projectile Launcher
7. Projectile Motion Equations
8. Straw Rocket Launches

Projectile Motion
First Launch
Objective/State the Question
In your group build 3 different straw rockets to test different design features.  Consider different weights, lengths, wings, balance, etc.

Materials
You will be provided 3 straws, modeling clay, index cards, tape, plastic caps for straws, scissors.

Procedure
Groups will build their rockets on the first day of the lab and plan the different launches that they want to conduct.  The second day of the lab each group will be given about 7 minutes to use the straw rocket launcher for as many experiments as they need to conduct.  Groups should create a procedure in advance for how they will efficiently use the rocket launcher and record data so that they will be done with their experiment within the given time.

Hypothesis
After building your straw rockets, but before launching your rockets, write a hypothesis about how each of the rockets will perform.  Make sure your hypothesis offers a comparison between the rockets as well as a reason for why you think they will perform differently.  Complete sentences please.

Collect Observations
Take notes about the distance, launch angle, direction, reliability, precision, aerodynamics, sources of error and any other data relevant for designing a straw rocket to hit a target.  Remember to include data only; do not add opinion, judgement, or recommendations yet.

Conclusions
Analyze your observations in evaluation of your hypothesis.  Additionally, you should make statements to better inform the building of your future rockets.  


















Marble Rolls
State the Question
In this experiment a marble will be rolled off of a table so that it begins to fall at the same time a second marble is dropped off of the table.
Materials
Table, two marbles, contact/carbon paper, iPad slow motion camera, rulers
Procedure
Make a detailed list of how to conduct this experiment to ensure that accurate results are recorded.
Hypothesis
Write a hypothesis to captures what how you expect the two marbles to behave and be observed.
Collect Observations
Take notes on what happened to the two marbles, how accurately the experiment was conducted, sources of error, and any other relevant data.Remember to include data only; do not add opinion, judgement, or recommendations yet.
Conclusions
Analyze your observations in evaluation of your hypothesis.  Make suggestions about the causes of the results of the experiment.

Mythbuster's takes the experiment a step further.

Ice Drops








Vertical Launch

Height vs. Time Graph