PHYS101: Gravity and Weight | Saylor Academy

This video explores gravity, one of the fundamental forces. The narrator explains gravitational interactions in terms of the gravitational field and describes when flat-earth-gravity is a valid approximation.

Source: University of Massachusetts, Amherst,

This work is licensed under a Creative Commons Attribution 3.0 License.

Course Introduction

Course Syllabus

Course Map

Unit 1: Introduction to Physics

Unit 1 Learning Outcomes

Final Exam

1.1: Scientific Theory, Law, and Models

An Introduction to Physics

1.2: Physical Quantities and Units

Physical Quantities and Units

1.3: Converting S.I. and Customary U.S. Units

Unit Conversion and Dimensional Analysis

Metric Units, Converting Units, Significant Figures

1.4: Uncertainty, Accuracy, Precision, and Significant Figures

Accuracy, Precision, and Significant Figures

1.5: Scientific Notation

Review of Scientific Notation

Applying Scientific Notation

Converting Scientific Notation to Standard Notation

Unit 2: Kinematics in a Straight Line

Unit 2 Learning Outcomes

2.1: Vectors, Scalars, and Coordinate Systems

Vectors, Scalars, and Coordinate Systems

2.2: Instantaneous and Average Values for Physical Quantities

Time, Velocity, and Speed

2.3: Distance and Displacement

Displacement

Distance and Displacement as Scalar Vectors

Displacement vs. Distance

Displacement Time Graphs

Vectors and Scalars

2.4: Speed and Velocity

Time, Velocity, and Speed

More on Speed and Velocity

Speed and Velocity vs. Distance and Displacement

2.5: Motion with Constant Acceleration

Acceleration

More on Acceleration

Motion Equations for Constant Acceleration in One Dimension

Average Acceleration

Acceleration Equations

2.6: Falling Objects

Falling Objects

Vertical Motion in Free Fall

Zero Gravity Demonstration

2.7: Calculating the Kinematic Quantities of Objects in Constant Acceleration

Kinematic Equations for Objects in Free Fall

Constant Acceleration Equations

More on Free Fall

Problem-Solving Basics for One-Dimensional Kinematics

Kinematic Equations in Constant Acceleration

Displacement with Constant Acceleration

2.8: Graphical Analysis

Graphical Analysis of One-Dimensional Motion

Interpreting Velocity Graphs

Unit 3: Kinematics in Two Dimensions

Unit 3 Learning Outcomes

3.1: Introduction to Kinematics in Two Dimensions using Vectors

Kinematics in Two Dimensions

Unit Vectors and Engineering Notation

3.2: Adding and Subtracting Vectors

Vector Addition and Subtraction

Vector Addition Using the Graphical Method

3.3. Adding Vectors Analytically: Determining the Components, Magnitude, and Direction of a Vector

Analytical Methods for Vector Addition and Subtraction

More on Vector Addition

Vector Components on a Grid

Projectiles at an Angle

Visualizing Vectors in Two Dimensions

Unit Vector Notation

3.4: Projectile Motion and Trajectory

Projectile Motion

More on Projectile Motion

Another Way to Determine Time In Air

Horizontally-Launched Projectiles

Launching and Landing at Different Elevations

Total Displacement for a Projectile

Total Final Velocity for a Projectile

Projectiles on an Incline

Unit 4: Dynamics