Ch. 4: Newton's Laws

Homework

Friday, 9/27

Chapter 4:

Questions: 1, 3, 5, 7, 8, 9

Problems: 1, 3, 4, 5, 6, 8, 9, 12, 21, 25, 26

Friday, 10/4

Chapter 4:

Questions: 10, 11, 12, 13

Problems: 23, 27, 29, 31, 36, 37, 39, 40, 41, 43

Thursday, 10/10

Chapter 4:

Questions: 14, 15, 18, 19, 20

Problems: 47, 48, 49, 55, 56, 69, 70, 74, 77, 78, 88

Unit Objectives

By the end of this unit, you will be able to:

• Draw free body diagrams (force diagrams) for systems of one or two objects
• Use Newton’s first law to predict the motion of an object that feels no force
• Use Newton’s second law to solve one- and two-body force problems that may include:

• Inclines • Friction

• Tension • Gravity

• Normal force • Forces at angles

• Use Newton’s third law to identify action-reaction pairs

Over the course of this unit, you will:

• Graph the force on an object as a function of the acceleration it experiences
• Predict the amount of weight hanging from a pulley to keep a system in equilibrium

Prerequisite skills: Understanding of position, velocity, and acceleration; mathematical reasoning; finding components of vectors; separation of motion in perpendicular directions

Newton's Laws Test on Monday, 10/14