2. The LAWS of Motion Or, Who is this Newton guy and why are they saying such nasty things about him? D Taylor Greenwich HS, CT © 2010, 2011, 2012 (Just in case…)

6. Final vote? 9-5 No…

8. Overview; 3 Laws of Motion –Based on Galileo’s work 1. Description of inertia 2. Relation between F, m, & a 3. The ever-popular action/reaction

9. Overview; 1 st : An object at rest will remain at rest & an object in motion will remain in motion in a straight line unless acted on by an outside force. –Common ‘ Mercan? All things wanna do what they ’ re doin ’ !

10. Overview;

11. Bike Accident Gravity and Motion10 Death-Defying m-stick demo (DO NOT attempt this at home. I am a semi-trained semi-professional…) Basketbowling Ball demo

13. Overview; 2 nd : An object ’ s acceleration is proportional to the net force acting upon it and inversely proportional to it ’ s mass. –Common ‘ Mercan? FMA

14. An UNBALANCED force Will cause Something To change it’s motion

15. Overview; 3 rd : When one object is in ‘contact’ with another there exists equal and opposite forces between them.

16. Overview; 3 rd : When one object is in contact with another there exists equal and opposite forces between them.

17. Overview; –Common “ Mercan? For every action there is an equal and opposite reaction F = -F

18. Nitty Gritty? Definitions? –Inertia –Mass –Force –Newton –Weight –Gravity Acceleration of Force of

19. Nitty Gritty? Inertia? –Property of matter that resists a change in its motion No units, not a #!

24. Reese Witherspoon Reese Withouterspoon

28. Nitty Gritty? Mass? –Measure of inertia Units - kg

29. Nitty Gritty? Force? –Push or pull Units ?

31. Challenge AUDIENCE! NEED folks NOW. –TEAM & LIVE TV audience. –Compeition Nov 03: Leave from train station @ 9PM Competition is @ 11:30PM Return here ~ 2PM –Parent & Teacher forms!!!

37. Nitty Gritty? Weight? –Force between YOU and the Earth! Unit - N

39. Nitty Gritty? Gravity? –Force between two objects caused by their masses…

40. Nitty Gritty? Gravity? –M 1 attracts M 2 –Why? Isaac Albert

41. Uncle Newt’s Law of Universal Gravitation

42. Uncle Al’s General Theory of Relativity (Gravitation)

43. Gravity Steel-Cage Match!: Isaac vs Albert

45. In this corner, weighing in at a wimpy 134 pounds, Isaac “Sociopath” Newton! And in this corner, weighing in at a healthy 175 pounds, Albert “The Tongue” Einstein! Who wins???

47. Gravity and Motion46

50. A little Intro… Cosmological Constant (Dark Energy) 1917 Einstein proposes Cosmological Constant to ‘fix’ the equation (stopped U from expanding…) 1929 Hubble discovers Expansion of the Universe 1934 Big Al calls his CC “my biggest blunder”. 1998 Astronomers find evidence for CC in Dark M&E 2000 Astronomers agree Big Al was “right even when he was wrong”

53. EXTREME Close up

54. The Monster in the Middle

55. What’s on the other side…?

56. Tech-TV Blunder!

59. NTQ’S LINK End; Part Uno

60. Nitty Gritty? Definitions? –Friction Coefficient of Static Kinetic Rolling

61. Nitty Gritty? m FAFA FfFf

62. M 1 FgFg FfFf M 2

64. Nitty Gritty? FgFg FfFf F // F⊥F⊥   Why is  =  ?

65. Atwood Machine 3 kg 4 kg F g =W=40 N F g =W=30 N  F = ?

66. Atwood Machine 3 kg 4 kg F g =W=40 N F g =W=30 N

67. Nitty Gritty? Gravity? –Force between ANY two masses –Not same as ‘ g ’ ACCELERATION OF Gravity!