Unit 3 - Physics 121

Physics 121
Unit 3: Newton's Three Laws: Motion & Force

Reading:

Sections 4.0 – 4.10

Homework:

Chapter 4

Questions: 11,15
Problems: 2,12,17,23,27,30,31,39,41,72

Dates:

***Homework may be turned in during class, or placed in the box outside of my office before 5:00 p.m.

Some Important Concepts from Chapter 4

What objects can exert a force?
What is required for an object to move at a constant velocity?
What is required for an object to remain at rest?
What is the difference between mass and weight?
What is the connection between Newton's laws and the kinematics equation?
What causes an acceleration, precisely?
What is the result of a net force acting on an object?
What is the relationship between the two objects referred to in Newton's third law?
If any object is pushing a second object with a certain force, with what force does the second object push back on the first?
Is the normal force always equal to the weight of an object?
What is the difference between the coefficient of static friction, and the coefficient of kinetic friction?
How are vector components used when solving problems on an incline?