Main Concepts
Follow white links to reading assignments and red links to multimedia
1.Mechanics ( Video)
2.Vectors vs. Scalars
3. Displacement vs. Distance
4. Velocity vs. Speed
a. Frame of Reference
b. Instantaneous Velocity
b. Average Velocity
c. Vectors
4. Acceleration
a. Freefall
b. Gravity
5. Kinematics Equations
a. Problems and Solutions
6. Projectile Motion (Video)
7. Forces
a. Types of forces
b. Free Body Diagrams
c. Net Force
d. Balanced and Unbalanced Forces
8. Newton's Laws of Motion (Video)
a. First Law - Inertia and Mass
b. Second Law - Misconceptions and Finding Acceleration
c. Third Law - Action/Reaction
Images
Figure 2.1-This photograph taken from the frame of reference of the front of a train shows motion, or change in position over time. Any change in position over time also indicates velocity, which is a vector quantity that includes speed with a direction.
Figure 2.2-This graph shows velocity, in blue, graphed over time. The green represents the tangent line and thus acceleration at a given point. Since the velocity changes over time, we can say that the object being graphed is experiencing acceleration.
Figure 2.3-This line is a vector. A vector is a quantity with magnitude and direction which is often represented by an arrow. The length of the arrow represents the size of the magnitude while the arrowhead points in the direction of the quantity. Displacment, velocity, acceleration, and force could are all vectors that can be represented by arrows.
Figure 2.4-This stroboscopic image shows a basketball bouncing in projectile motion. Projectile motion is the parabolic path that objects follow when launched near Earth's surface. It is an example of two dimensional motion. All projectiles are constantly subject to the force of gravity, which results in a curved path.
Figure 2.5-All of Newton's laws can be applied to the skaters above. Before pushing off on one another, the skaters experience zero net forces. The gravity and normal force balance out and the skaters remain at rest. Once the skaters do push off on one another they experience equal and opposite forces. The action of pushing off, results in the reaction of going backwards. The force of the push is greater than the friction from the ice, so each skater experiences an acceleration. Once the unbalanced force of the push is over, the skaters again experience somewhat balanced forces and will continue in motion until stopped by an unbalanced force (usually friction). |
Main Questions
- How do you calculate velocity, accleration, and vectors?
- What is the difference between speed, velocity, and acceleration?
- How can we analyze motion around us?
- What is the relationship between motion and forces?
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Vocabulary
mechanics, kinematics, motion, one-dimensional motion, scalar, vector, distance, displacement, frame of reference, speed, constant speed, average speed, velocity, average velocity, instantaneous velocity, acceleration, force, contact force, field force, free fall, gravity, kinematics equations, projectile motion, two dimensional motion, balanced force, unbalanced force, free body diagram, Newton's first law of motion, Newton's second law of motion, Newton's third law of motion |
Videos
- "Wright Brothers Flying Machine" Nova (54:01)
- Vomit Comet-Freefall in an Airplane-You Tube (4:00)
- Spud Webb 5'7" Dunker Extraordinaire-Hang Time and Free Fall-YouTube (3:31)
- "The Mystery of Hang Time" (6:26)-FSN Sports Science
- "Fastest Ball on Earth" (8:47)-FSN Sports Science
- "Angular Velocity of Bicycle Kick" (4:35)-FSN Sports Science
- "Reaction Time-Hockey Goalie" (5:01)-FSN Sports Science
- Shooting Bugs at Very High Speeds-YouTube (3:19)
- "Vectors" (28:52)-Physics explains why, how much, and in what direction. Part of the Mechanical Universe series by Anneberg, free login required.
- "Fundamental Forces" (29:04)-All physical phenomenon are explained by four forces: weak nuclear, strong nuclear, electromagnetic, and gravity. Part of the Mechanical Universe series by Anneberg, free login required.
- "The Law of Falling Bodies" (29:06)-Galileo designs experiements to find that the acceleration of gravity affects all object equally (its the air that's a pain in a physicist's butt). Part of the Mechanical Universe series by Anneberg, free login required.
- "The Apple and the Moon" (29:09)-Newton describes a fundamental force that results in attraction between two bodies. Part of the Mechanical Universe series by Anneberg, free login required.
- "Intertia" (28:00)-Galileo risks it all to prove the concept of inertia, which later becomes Newton's First Law. Part of the Mechanical Universe series by Anneberg, free login required.
- "Newton's Laws" (29:00)-Newton lays down the laws that can't be broken. Part of the Mechanical Universe series by Anneberg, free login required.
Documents
- Hands-On Labs
- Activities
- Fieldwork
- Quizzes
- Excel Files
Online Activities
- Minds On Physics Modules-Shockwave Needed
- Kinematics Concepts
- 1-Scalars and Vectors
- 2-Distance and Displacement
- 3-Speed and Velocity
- 4-Acceleration
- 5-Oil Drop Representations
- 6-Average Speed Computations
- 7-Acceleration Computations
- 8-Pos-T and Vel-T Data Analysis
- Kinematic Graphing
- 1-Basics of p-t graphs
- 2-Interpreting p-t graphs
- 3-Interpreting p-t graphs
- 4-P-t graphs Slope Calculations
- 5-Basics of v-t graphs
- 6-Interpreting v-t graphs
- 7-Interpreting v-t graphs
- 8-Slope and Area of v-t graphs
- 9-Graphs and oil drop diagrams
- 10-Common Misconceptions
- 11-Matching p-t and v-t graphs
- Newton's Laws
- 1-Intertia, mass, and Newton's 1st Law
- 2-Balanced forces
- 3-Unbalanced forces and acceleration
- 4-Types of forces
- 5-Force diagrams
- 6-Mass vs. weight
- 7-Newton's 2nd Law
- 8-F=ma calculations
- 9-Force analysis
- 10-Free fall acceleration
- 11-Air resistance
- 12-Newton's 3rd Law
- Vectors and Projectiles
- 1-Direction of vectors
- 2-Vector addition diagrams
- 3-Vector addition applications
- 4-Adding right angle vectors
- 5-Vector components
- 6-Velocity and river boats
- 7-The nature of a projectile
- 8-The acceleration and velocity of a projectile
- 9-Velocity components for a projectile
- 10-Displacement and time
- Forces in Two Directions
- 1-Vector Components
- 2-Fnet=ma and forces at angles
- 3-Equilibrium concepts
- 4-Static equilibrium analysis
- 5-Inclined plane concept
- 6-Inclined plane analysis
- Simulation Labs by GBS-Shockwave Needed
- Physics Education Tech
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