2. The Physics of Sports

3. Main Injector, 2 miles around Tevatron, 4 miles around Fermilab

4. Argonne National Laboratory

5. Physics explains things that are very, very large.

6. Physics explains things that are very, very small.

7. Physics explains things that are right in front of us.

8. Newton’s First Law Objects at rest remain at rest Objects in motion remain in motion UNTIL YOU APPLY A FORCE

9. Newton’s Second Law F = ma What forces are important in sports?

10. Flight Path

11. Energy in the baseball/bat collision

12. The Home Run Swing Ball arrives on 10 0 downward trajectory Big Mac swings up at 25 0 Ball takes off at 35 0 The optimum home run angle! Courtesy of A. Nathan, University of Illinois. http://www.npl.uiuc.edu/~a-nathan/pob/

13. Newton’s Third Law For every action there is an equal and opposite reaction.

14. Conservation of Energy Potential Energy Kinetic Energy Compression Energy Heat and Sound Energy

15. Conservation of Momentum If m 1 = m 2, then v 1 = v 2

16. Conservation of Momentum

17. Ball material, size, shape, and texture Properties of the club, bat, racquet, or stick Equipment features

18. http://ffden-2.phys.uaf.edu/211_fall2002.web.dir/Daniel_Lenord/vault.html

19. Air Resistance (drag)

20. FRICTIONFRICTION

22. Resistance & Friction

23. The Power of Spin

24. Spins in Figure Skating

26. Reaction Time

27. Downhill skier speed: 80 mph

28. Reaction Time in Baseball Courtesy of R. Adair through A. Nathan.

29. Measure your reaction time…

30. Compare your reaction time… Equation used: t = √((2d)/g)

31. Physical laws explain the world Newton’s Laws of Motion Conservation of Energy Conservation of Momentum These laws help us explain everything about sports. Physics really is everywhere!

32. Visit Fermilab www.fnal.gov Buffalo viewing Bicycling Walking Roller blading Canoeing Fishing

33. Visit Fermilab Lederman Science Center Tours Saturday morning physics Ask a Scientist On-line activities: www-ed.fnal.gov

34. The Physics of Sports