Download Chapter 2 Study Guide- Test on Thursday 5/3

Chapter 2 Study Guide- Test on Thursday 5/3
Know the following vocabulary:
Force
Newton
Deceleration
Weight
Newton’s first law
Net force
Newton’s second law
Acceleration due to gravity
Inertia
Acceleration
Free fall
Terminal speed
Air resistance
Velocity
Know the following concepts:
Chapter 2 Section 1

Page 28 Newton’s First Law
o Understand force & recognize that force is needed to change an object’s motion.
o Be able to explain Newton’s First Law
o No change in motion without the presence of a force

Page 29 Forces, Mass, and Inertia
o Describe how inertia and force are related.
o Objects with more mass have more inertia

Page 30 Units of Force
o Weight vs. Mass
o Newton- the amount of force it takes to change the speed of a 1 kg mass by 1
m/sec in one second.

Page 31 The Net Force
o Describe net force and how is it determined.
o Forces in horizontal and vertical directions
Chapter 2 Section 2

Page 32 Acceleration and Newton’s Second Law
o Describe acceleration and explain how it relates to force and mass.

Page 33 Units of acceleration
o Know the units used for acceleration (m/sec²)
o Acceleration = change in speed /change in time

Page 34 Calculating acceleration
o Be able to calculate acceleration
o a = V2 - V1 / t
o V2 = Final Speed V1= Starting Speed T = time
o Know the units (meters and seconds)

Page 35 Force, mass, and acceleration
o Be able to explain Newton’s Second Law
o Explain the relationship between force, mass, and acceleration

Page 36 Applying the second law
o Know the guidelines for how to apply Newton’s Second Law
o Know what units to use when using force in Newton’s.

Page 37 Doing calculations with the second law
o Newton’s Second Law- a = F/m
o a = acceleration F = force m = mass

Page 38 Forces and energy
o Describe the relationship between energy and force
o Low energy vs. High Energy
o Forces are created any time there is a difference in energy
Chapter 2 Section 3

Page 39 Gravity and Free Fall
o Describe the motion of an object in free fall
o Free Fall Speed - v = gt
o v = speed g = acceleration due to gravity t = time

Page 40 Upward Launches
o An object at free fall accelerates downward at 9.8 m/sec²
o As a ball moves upward, the speed decreases by 9.8 m/sec² until it reached zero
o As the ball moves downward, the speed increases by 9.8 m/sec²
o Velocity- speed with direction

Page 41 Free Fall and Distance
o Average speed
o Vf = gt (acceleration due to gravity x time)
o Vi = Initial Speed
o V avg = Vf + Vi
2

Page 43 Gravity and weight
o Be able to explain the difference between mass and weight
o Weight and the second law – Fg = mg
o Fg = weight or force of gravity m = mass g = strength of gravity
o Units- Newton’s and kilograms

Page 44 Mass is fundamental
o Mass is a fundamental property of an object measured in kilograms
o Weight is a force measured in Newton’s that depends on mass and gravity

Page 45 Air resistance
o Be able to explain how air resistance affects the motion of objects
o Factors affecting air resistance
o Describe terminal speed as it relates to air resistance.