12-1-2008

12-1-2008

Daily Questions: 1) Identify the action/ reaction pair of your weight. 2) Which is larger? 3) How does a helicopter get its lifting force?
 * I push down of the Earth, The Earth pushes up on me.
 * They are equal.

Assignments:
 * Obtain a ruler and a protractor by Wednesday.
 * Newton's 3rd Law of Motion Notes - pages 6 & 7 of Unit 5

Sheets passed out:
 * Newton's 3rd Law of Motion Notes - pages 6 & 7 of Unit 5

Newtonian pairs concern 2 objects while Balanced forces concern 1 object. Action/ Reaction versus This snowman demonstrated Action/ Reaction by moving as the air in the balloon escapes.

This is a drawing of the forces involved in a balanced equation versus an action/ reaction equation

First Image Fg: Earth pulls on box. Fn: Table pushes on box.

Second Image Fn:Table pushes on ground. Fn:Ground pushes on table.