Here are the statements categorized according to Newton's Three Laws:
1. **When riding the bumper cars at the fair, you bump into your friend and your car bounces backwards.**
- **Newton's 3rd Law**
2. **A ball is rolling straight across the floor until Bradley kicks it.**
- **Newton's 1st Law**
3. **A bowling ball and a baseball both roll across your foot at the same speed. The bowling ball hurts much more.**
- **Newton's 2nd Law** (This demonstrates the concept of mass and acceleration).
4. **Your car breaks down. As your friends help you push it, it begins to move and speed up.**
- **Newton's 2nd Law**
5. **A fireman turns on his hose and is knocked backwards.**
- **Newton's 3rd Law**
6. **A soccer ball will not move until a player kicks it.**
- **Newton's 1st Law**
7. **F = ma**
- **Newton's 2nd Law**
This categorization aligns the statements with the appropriate laws of motion as described by Isaac Newton.