The goal: make some collisions with carts. See if momentum and kinetic energy are conserved.
Let me start with two examples:
Now, what to do?
- You want some carts to collide.
- There are different things you can put on the front of the carts. The red/blue carts have built in magnets on one side and the other has velcro and springy things.
- What about an explosion? Is momentum conserved there?
- Does it matter if the carts are the same mass?
- What about three collisions?
Really, the first thing you want to think about is how you will measure the speeds before and after the collision. I will let you decide, but here are some options:
- Photo gates (yes, we have these)
- 2 motion detectors
- Make a video and then do video analysis.
Yes, there is a vpython lab to go along with this. I will post the documents in blackboard.
You might like these links:
- Curling Collisions
- ESPN Sport Science on Collisions: Video Break Down
- Collisions: Kinetic energy or momentum?
- An example of two collisions
- How to Model Newton's Cradle
- What Went Wrong With the MythBusters' Newton Cradle?