Uniform Motion: motion with zero acceleration
- constant, some fixed number
- \(x_o\) is the initial position, \(x(0)\)
Solving Uniform Motion Problems
- Make sure you have large amounts of blank scratch paper.
- Draw a picture.
- Draw a schematic diagram with a coordinate system with a well-defined zero and positive direction
- Find and list what you know and what you need to know.
- Determine what physics applies to the problem and find relationships between what you know and don't know.
- If you have the same number of independent equations and unknowns you should be able to solve the problem.
- For more than one object add numbered subscripts (1, 2, etc.) to distinguish between objects.
- Always check to see if your answer makes sense.
Do Now! Do these exercises immediately.
Not Now! Do these after you start to forget the topic, say in a week.
More! More exercises if you want. Maybe review before a test.
1. Bob is a slow and fat physics professor that runs at a top speed of 6 m/s when chased by a velociraptor running at a top speed of 31 m/s. If Bob has a 100 m head start, how far does he get before he is caught and devoured?