Chapter 6Physics A First Course Energy and Systems

Energy and SystemsSystems in Motion

6.1 Motion in Two Dimension

6.2 Circular Motion

6.3 Centripetal Force, Gravitation, and Satellites

6.4 Center of Mass

6A Investigation: Projectile Motion

Key Question:

How do you predict the distance a projectile will travel?

*Students read text section 6.1

AFTER Investigation 6A

6A Investigation Topics

Launch projectiles.

Measure the range of a projectile.

Identify the variables that affect the range of a projectile.

Determine the range of a projectile launched at a certain angle and launch speed.

Chapter 6.1 Objectives and Vocabulary

displacement projectile trajectory parabola range

Define projectile. Recognize the independence of a

projectile's horizontal and vertical velocities.

Describe the path of a projectile. Calculate a projectile's horizontal

and vertical distance or speed. Explain how a projectile's launch

angle affects its range.

6.1 Motion in two dimensions

6B Investigation: Motion on a Ramp

Key Question:

How does gravity work on a ramp?

*Students read text section 6.2

AFTER Investigation 6B

6B Investigation Topics

Measure acceleration. Calculate the steepness of a hill. Analyze motion on a ramp. Calculate speed and acceleration. Graph acceleration. Use Newton's second law to calculate force.

Chapter 6.2 Objectives and Vocabulary circular motion

revolve angular speed linear speed circumference

Distinguish between rotation and revolution.

Calculate angular speed. Explain how angular speed,

linear speed, and distance are related.

Chapter 6.3 Objectives and Vocabulary centripetal

force centrifugal

force law of universal

gravitation gravitational

constant satellite orbit ellipse

Explain how a centripetal force causes circular motion.

List the factors that affect centripetal force.

Describe the relationship between gravitational force, mass, and distance.

Relate centripetal force to orbital motion.

Chapter 6.4 Objectives and Vocabulary center of mass

center of gravity

Define the center of mass and center of gravity.

Explain how to locate an objects center of mass and center of gravity.

Use the concept of center of gravity to explain toppling.