How Can AP Physics Enhance Water Rocket Projects?

In summary, Chris is thinking about having students write code to predict the apogee of their water rockets.
  • #1
kq6up
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I love doing water rockets and I normally do them in the regular physics classes. However, I would like to do a water rocket lab with added rigor for the AP level course. I was thinking about having them write a iterator to factor in the drag and try to predict apogee. That might be too much for them though. Does anyone have any suggestions as to something in between just building 2l water rockets, and writing code to try to predict its apogee.

Thanks,
Chris
 
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  • #2
You could shoot the water rocket on a tile floor and have them figure out how far it will slide without friction and then compute the friction that occurred. You could also mount it on wheels and see how far it might go. Or you could determine its momentum when it hits another object.

You could tell them the Darwin awards winner with the jato on a car and crashing into a hillside. I think it was an urban legend but it sounds cool.

Another idea would be to compute whether it can hit a target that is either on the ground or elevated somewhat. This could bring in air resistance and how it affects trajectory.
 
  • #3
Well if you have students already doing computer modelling a lot, then trying to build a model that predicts range and apogee is doable.
The least you can do is work out the zero-drag case and demonstrate the difference.
You can also compare with other compressed-air projectiles.
 
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  • #4
@Simon Bridge Not a bad idea. I am thinking about offering the iterator as extra credit. That can use Maxima, Sage or Octave. They are free.

Chris
 
  • #7
I ended up letting the class design their own investigation. One group is going to be launching an old iPhone to record acceleration.

Chris
 

Related to How Can AP Physics Enhance Water Rocket Projects?

1. What is AP Physics and how does it relate to water rockets?

AP Physics, or Advanced Placement Physics, is a high school level course that covers topics in mechanics, electricity and magnetism, and thermodynamics. It is designed to prepare students for college-level physics courses. Water rockets involve the principles of mechanics, specifically projectile motion, which is a key topic in AP Physics.

2. How do water rockets work?

Water rockets work by filling a plastic bottle with water and pressurized air. When the air is released, it pushes the water out of the bottle, creating a thrust force that propels the rocket upwards. The force of gravity then causes the rocket to fall back to the ground.

3. How can I calculate the maximum height reached by a water rocket?

To calculate the maximum height reached by a water rocket, you can use the equations of motion from AP Physics. You will need to know the initial velocity, launch angle, and launch height of the rocket. By plugging these values into the equations, you can calculate the maximum height reached by the rocket.

4. Are there any safety precautions I should take when launching a water rocket?

Yes, there are several safety precautions you should take when launching a water rocket. First, make sure to launch the rocket in an open outdoor area, away from people and buildings. Wear safety goggles to protect your eyes from any potential debris. Also, never aim a water rocket at someone or something valuable, as it can cause injury or damage.

5. What are some real-world applications of water rockets?

Water rockets have several real-world applications, such as studying the principles of projectile motion, testing aerodynamics, and understanding the effects of air pressure on objects. They are also used in educational settings to demonstrate concepts of physics and engineering. Additionally, water rockets are a fun and engaging way to learn about science and can inspire students to pursue careers in STEM fields.

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