1. Physics A First Course
Forces and Motion
Chapter 2

2. Forces and Motion Laws of Motion
2.1 Newton's First Law
2.2 Acceleration and Newton's Second Law
2.3 Gravity and Free Fall
2.4 Graphs of Motion

3. 2A Investigation: Law of Inertia
Key Question:
Why are heavier objects harder to start or stop moving?
*Students read text section 2.1
AFTER Investigation 2A

4. 2A Investigation Topics
Launch cars of different mass.
Measure time intervals.
Calculate speed based on measured time intervals.
Graph speed vs. mass.
Research and define terms: inertia, weight and mass.

5. Chapter 2.1 Objectives and Vocabulary
Recognize that force is needed to change an object's motion.
Explain Newton's first law.
Describe how inertia and mass are related.
force
Newton's first law
inertia
newton
net force

9. 2B Investigation: Newton's Second Law
Key Questions:
What is force?
What is the relationship between force and motion?
*Students read text section 2.2
AFTER Investigation 2B

10. 2B Investigation Topics
Measure time intervals of car moving along track.
Calculate and compare speeds of car at different points on track.
Evaluate forces acting on car.
Calculate acceleration of car.
Use Newton's second law to calculate the force.
Graph force vs. time for the car on the track.
Explain how speed and acceleration are different using graphs.

11. Chapter 2.2 Objectives and Vocabulary
Define and calculate acceleration.
Explain the relationship between force, mass, and acceleration.
Determine mass, acceleration and force given two of the quantities.
acceleration
deceleration
Newton's second law

14. Chapter 2.3 Objectives and Vocabulary
Describe the motion of an object in free fall.
Calculate the speed and distance for an object in free fall.
Distinguish between mass and weight.
Explain how air resistance affects the motion of objects.
free fall
acceleration due to gravity
velocity
weight
air resistance
terminal speed

19. Chapter 2.4 Objectives and Vocabulary
Describe motion with position versus time and speed versus time graphs.
Use a position versus time graph to calculate speed from the slope.
Use a speed versus time graph to calculate acceleration and distance traveled.
slope