ICP

1/29/13Momentum and Gravity

Warmup

• Pay close attention to the video. Questions will follow.

Warmup

1) What factors allowed Ray Lewis to be able to knock down the door?

2) Explain some ways that someone could protect a door so that it is Ray Lewis-proof.

Agenda

• Universal Law of Gravitation Lesson• Go through examples of how distance and

mass affect gravity.• Vocabulary Chapter 12

Universal Law of Gravitation

F = Gm1m2

d2

G = 6.67 x 10-11 Radius of earth, d = 6.4 x 106mEarth’s mass = 5.97 x 1024 kg

Vocabulary Chapter 12

• Inertia• Weight• Mass• Terminal velocity• Projectile motion• Momentum• Law of conservation of momentum