1. PASS Content Standard 2.2 Gravitation is a universal force that each mass exerts on any other mass.

4. The force of attraction between all objects in the universe. The force of attraction between all objects in the universe.

5. Gravitation - 3 min

6. The weakest of the known natural forces. The weakest of the known natural forces.

7. Only becomes obvious when massive objects like stars and planets are involved. Only becomes obvious when massive objects like stars and planets are involved.

8. Gravity - 4 min

9. Near the surface of the earth, gravity accelerates all objects at a rate of Near the surface of the earth, gravity accelerates all objects at a rate of 9.8 m/s 2

10. Near the surface of the earth, gravity accelerates all objects at a rate of Near the surface of the earth, gravity accelerates all objects at a rate of 32 ft/s 2

13. Terminal Velocity the point at which air resistance offsets the weight of a falling object, stopping its acceleration.

15. Any object thrown through the air is a projectile.

16. All projectiles have two velocities.

17. Horizontal and Vertical velocities are separate.

18. Horizontal and Vertical velocities are separate.

19. A projectile's path is always curved.

20. A projectile's path is always curved.

22. Juggling - 3 min

24. Orbital Motion Orbital Velocity Escape Velocity Sub-orbital Velocity

25. What is an orbit - 2 min

26. Sputnik The first man-made satellite was launched by Russia on October 4, 1957.

30. 40s and 50s Technology - 6 min

31. Yury Gagarin - April 12, 1961

32. Yury Gagarin - 3 min

33. Alan Shepard - May 5, 1961

34. Alan Shepard - 2 min

35. Gus Grissom - July 21, 1961

36. Gus Grissom - 2 min

37. John Glenn - Feb 20, 1962

38. John Glenn - 3 min

39. Kepler’s Laws of Planetary Motion :

41. Escape Velocity The velocity needed to escape the orbital gravity of a planet.

42. For the Earth: 11.2 km/sec 25,000 mph 7 miles/sec Escape Velocity

43. For the Moon - 2.4 km/sec For the Sun - 618 km/sec Escape Velocity

44. Newton’s Law of Universal Gravitation All objects in the universe attract each other by the force of gravity.

46. In what year did man first walk on the moon? In what year did man first walk on the moon?

47. 1969 In what year did man first walk on the moon? In what year did man first walk on the moon?

50. To The Moon - 17 min

52. Lunar Lander - 2 min

53. In what year was the first shuttle flight? In what year was the first shuttle flight?

54. 1981 In what year was the first shuttle flight? In what year was the first shuttle flight?

60. The Space Shuttle - 11 min

62. The Countdown - 14 min

64. The Astronauts - 11 min

66. The Payload - 9 min

75. Skateboards - 3 min

77. Matter is NEVER weightless

78. weight = m X g

79. m = mass in kilograms g = 9.8 m/s 2 Units of weight are Newtons