These are my answers they might not all be right.
1. Motion
2. Speed
3. 2nd
4. Reaction
5. Linear
6. Force
7. Clockwise
8. True
9. False
10. Both linear and rotary
Hopefully they are all correct !
Ibeleive the answer is bullying because younger kids get bullied and even sometimes adults but teenegers get bullied the most by other teenagers which causes stress and other issues.
sorry if its wrong