Download File

Physical Science
Student Objectives
Chapter 3 – Sections 3-1 and 3-2
Section 3-1: Newton’s Second Law of Motion
I will be able to








State the 2 definitions, one in terms of force and the other in terms of acceleration.
State the 2 key components.
State the formula produced by each of the definitions.
State the units of force, providing the special name given to this unit.
Explain direct and indirect proportion as it relates to Newton's Second law.
Explain why force is a vector.
Apply the formulas to a given physical situation.
Illustrate Newton’s Second Law of Motion using physical examples.
Section 3-2: Gravity
I will be able to
 Define the force due to gravity.
 State the 2 key factors that the amount of gravitational force depends upon.
 Describe how gravitational force changes, as it relates to the mass of and distance
between 2 objects.
 Explain why gravity is a long range force effecting the motion of the Earth.
 Explain the symbol g, including its value and unit.
 State and apply the mathematical model for weight.
 Explain the relationship between mass and weight.
 Explain the relationship between weight and the force of gravity.
 Compare the mass, weight and inertia of an object on the moon as compared to the earth.
 Illustrate why there is gravity in space.
 State the 4 basic forces.
 State and apply the formula for force for an object that is vertically lifted.
Section 3-1: Friction
I will be able to











Define the force of friction.
State the 2 key factors that friction depends upon.
Explain the cause of friction.
Define static friction.
Explain how static friction is overcome in order to move an object.
Define sliding friction.
Explain the connection between sliding friction and microwelds.
Define rolling friction.
Provide examples for each type of friction.
Apply Newton's First Law of Motion to an object that is moving at a constant speed and
is experiencing either sliding or rolling friction.
Compare the size of static friction to sliding or rolling friction when an object is not
moving, has just started moving, is accelerating and is moving at a constant speed.

Compare the size of the pushing or pulling force on an object to friction when an object is
not moving, has just started moving, is accelerating and is moving at a constant speed.
Section 3-1: Falling Objects/Non-Freefall Motion
I will be able to
 Define non-freefall motion.
 Explain why air resistance is a form of friction.
 Name the 4 criteria that air resistance is dependent upon.
 Define terminal velocity.
 Name the 6 criteria that terminal velocity is dependent upon.
 Provide a detailed explanation of the motion of an object as it falls, including
changes in velocity, acceleration, and air resistance.
 Describe an object's velocity, acceleration, weight as compared to air resistance
and the connection to Newton's First Law of Motion when terminal velocity has
been reached.
 Provide a detailed explanation of the motion of a person who jumps from a plane
with an unopened parachute which will eventually open.
Section 3-1: Falling Objects/Freefall Motion
I will be able to
 Define freefall motion.
 Provide a detailed explanation of the motion of an object as it falls, including the
object's velocity, acceleration, air resistance and terminal velocity.
Labs


Newton’s Second Law of Motion Simulation Lab
Friction – O What a Drag - Lab
Formulas:
Weight :
W  mg
F
m
Horizontal Motion with Friction: F  f  ma , f  F  ma , F  f  ma
F
Vertical Motion: F  m(a  g ) , m 
ag
Horizontal Motion without Friction: F  ma , Fnet  ma , a 
Be sure to know the units of the numbers that you are writing. There will be a units
matching section on this test. Add the following units to the list from the last test.
Weight
Friction (static, sliding, rolling)
Net Force
Gravity
Terminal Velocity
Acceleration due to gravity
N
N
N
N
m/ s
m / s2