Description: Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary. Physics (from Greek: φύσις physis "nature") is a natural science that involves the study of matter and its motion through spacetime, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.
Resources: OpenCourseware from Khan Academy, MIT, UC Berkeley, Stanford along with many of the World's finest University's.
Professors: Ebenezer Appiah, Default Professor, Michael Williams, Ankush Dharkar
Introduction to Vectors and Scalars : Distance, displacement, speed and velocity. Difference between ve
Calculating Average Velocity or Speed
Solving for Time : Simple example of solving for time given distance and rate
Displacement from Time and Velocity Example : Worked example of calculating displacement from ti
Acceleration : Calculating the acceleration of a Porshe
Newton's First Law of Motion : Newton's First Law (Galileo's Law of Inertia).
Newton's Second Law of Motion : Newton's Second Law of Motion: F=ma
Newton's Third Law of Motion : Every action has an equal and opposite reaction
Airbus A380 Take-off Time : Figuring how long it takes an a380 to take off given a constant acceleration
Airbus A380 Take-off Distance : How long of a runway does as a380 need
Why Distance is Area under Velocity-Time Line : Understanding why distance is area under velocity-ti
Average Velocity for Constant Acceleration : Calculating average velocity when acceleration is constant
Acceleration of Aircraft Carrier Takeoff : Using what we know about takeoff velocity and runway length
Race Cars with Constant Speed Around Curve : When acceleration could involve a change in direction
Introduction to Gravity : Basics of gravity and the Law of Universal Gravitation
Mass and Weight Clarification : Difference between mass and weight
Gravity for Astronauts in Orbit : Why do astronauts appear weightless despite being near the Earth?
Would a Brick or Feather Fall Faster : What would fall faster on the moon?
Deriving Displacement as a Function of Time, Acceleration and Initial Velocity
Plotting Projectile Displacement, Acceleration, and Velocity
Projectile Height Given Time : Figuring out how high a ball gets given how long it spends in the air
Deriving Max Projectile Displacement Given Time
Impact Velocity From Given Height : Determining how fast something will be traveling upon impact wh
Visualizing Vectors in 2 Dimensions : Visualizing, adding and breaking down vectors in 2 dimensions
Projectile at an Angle : Figuring out the horizontal displacement for a projectile launched at an angle
Different Way to Determine Time in Air : Another way to determine time in the air given an initial vertical
Launching and Landing on Different Elevations : More complicated example involving launching and la
Total Displacement for Projectile : Reconstructing the total displacement vector for a projectile
Total Final Velocity for Projectile : Calculating the total final velocity for a projectile landing at a different
Correction to Total Final Velocity for Projectile
Projectile on an Incline : Challenging problem of a projectile on an inclined plane
Unit Vectors and Engineering Notation : Using unit vectors to represent the components of a vector
Clearing the Green Monster at Fenway : Setting up the problem to determine the minimum velocity to hit
Green Monster at Fenway Part 2 : Solving the problem to determine the minimum velocity to hit a ball with to
Optimal angle for a projectile part 1
Optimal angle for a projectile part 2 - Hangtime
Optimal angle for a projectile part 3 - Horizontal distance as a function of angle (and speed) : Horiz
Optimal angle for a projectile part 4 Finding the optimal angle and distance with a bit of cal
Normal Force and Contact Force : The force that keeps a block of ice from falling towards the center of the earth
Normal Force in an Elevator : How the normal force changes when an elevator accelerates
Inclined Plane Force Components : Figuring out the components of the force due to gravity that are parallel and perpendic
Ice Accelerating Down an Incline : Figuring out the acceleration of ice down a plane made of ice
Force of Friction Keeping the Block Stationary : Block of wood kept stationary by the force of friction (Correction
Correction to Force of Friction Keeping the Block Stationary
Force of Friction Keeping Velocity Constant : Calculating the coefficient of kinetic friction (correction ma
Intuition on Static and Kinetic Friction Comparisons : Why static friction is harder to overcome than kinetic f
Static and Kinetic Friction Example : Thinking about the coefficients of static and kinetic friction
Introduction to Tension : An introduction to tension. Solving for the tension(s) in a set of wires when a weight
Tension (part 2) : A slightly more difficult tension problem.
Tension in an accelerating system and pie in the face : The second part to the complicated problem. We figure out the
Moving pulley problem (part 1) : What happens when we pull on a pulley and the pulley is pulling on other thi
Moving pulley problem (part 2) : Second part of what happens when we pull on a pulley.
Introduction to Momentum : What momentum is. A simple problem involving momentum.
Momentum: Ice skater throws a ball : A simple conservation of momentum problem involving an ice skater and a ball
2-dimensional momentum problem : An example of conservation of momentum in two dimensions.
2-dimensional momentum problem (part 2) : We finish the 2-dimensional momentum problem
Introduction to work and energy
Work and Energy (part 2) : More on work. Introduction to Kinetic and Potential Energies.
Conservation of Energy : Using the law of conservation of energy to see how potential energy is converted i
Work/Energy problem with Friction : A conservation of energy problem where all of the energy is not conserved.
Introduction to mechanical advantage : Introduction to simple machines, mechanical advantage and moments.
Mechanical Advantage (part 2) : More on mechanical advantage, levers and moments.
Mechanical Advantage (part 3) : Introduction to pulleys and wedges
Center of Mass : Introduction to the center of mass
Introduction to Torque
Moments (part 2) : 2 more moment problems.
Unit Vector Notation : Expressing a vector as the scaled sum of unit vectors
Unit Vector Notation (part 2) : More on unit vector notation. Showing that adding the x and y components of two ve
Projectile Motion with Unit Vectors : Determining the position vector as a function of time
Projectile Motion with Unit Vectors (part 2) : Let's see if the ball can clear the wall.
Projectile Motion with Ordered Set Notation : Solving the second part to the projectile motion problem (with wind gust)
Introduction to centripetal acceleration (part 1) : Intuition behind what it takes to make something travel in
Centripetal Acceleration (part 2) : More intuition on centripetal acceleration. A simple orbit problem.
Centripetal Acceleration (part 3) : How fast does a car need to go to complete a loop-d-loop.
Visual Proof: a= v^2/r : Visual proof that centripetal acceleration = v^2/r
Calculus Proof that a=v^2/r : Using calculus and vectors to show that centripetal acceleration = v^2/r
Introduction to angular velocity : Angular velocity or how fast something is spinning.
Conservation of angular momemtum : Angular momentum is constant when there is no net torque.
Introduction to Newton's Law of Gravitation : A little bit on gravity
Gravitation (part 2) : A little bit more on gravity
Intro to springs and Hooke's Law
Potential energy stored in a spring : Work needed to compress a spring is the same thing as the potential energy st
Spring potential energy example (mistake in math) : A spring, a frozen loop-d-loop and more! (See if you c
Introduction to Harmonic Motion : Intuition behind the motion of a mass on a spring (some calculus near the end).
Harmonic Motion Part 2 (calculus) : We test whether Acos(wt) can describe the motion of the mass on a spring by substituti
Harmonic Motion Part 3 (no calculus) : Figuring out the period, frequency, and amplitude of the harmonic motio
Fluids (part 1) : What a fluid is. Difference between liquids and gasses (both fluids).
Fluids (part 2) : Pressure and Pascal's Principal.
Fluids (part 3) : Pressure in a fluid at depth
Fluids (part 4) : Using our understanding of fluid pressure to figure out the height of a column of mercury.
Fluids (part 5) : Introduction to Archimedes' principle and buoyant force.
Fluids (part 6) : A couple of problems involving Archimedes' principle and buoyant forces.
Fluids (part 7) : Introduction to the study of moving fluids.
Fluids (part 8) : Beginning of the proof of Bernoulli's Equation.
Fluids (part 9) : Second part of the Bernoulli's Equation proof. Beginning of a problem that uses the equation.
Fluids (part 10) : Second part of the example that uses Bernoulli's equation.
Fluids (part 11) : Clarification of the problem in part 10
Fluids (part 12) : Complete example of a Bernoulli's Equation exercise.
Thermodynamics (part 1) : Intuition of how gases generate pressure in a container and why pressure x volume is
Thermodynamics (part 2) : Example problem that pv=pv. Introduction to temperature.
Thermodynamics (part 3) : Introduction to Kelvin. Example of a problem involving the ideal gas law
Thermodynamics (part 4) : Introduction to the concept of a mole. Universal gas constant R. PV=nR
Thermodynamics (part 5) : Example problem involving PV=nRT
Electrostatics (part 1): Introduction to Charge and Coulomb's Law
Electrostatics (part 2) : Electric Fields
Proof (Advanced): Field from infinite plate (part 1) : Electric field generated by a uniformly charged, infinite p
Proof (Advanced): Field from infinite plate (part 2) : We see that the infinite, uniformly charged plate genera
Electric Potential Energy : Introduction to electric potential
Electric Potential Energy (part 2-- involves calculus) : Electric potential energy difference in a varying field
Voltage : Difference between electrical potential (voltage) and electrical potential energy
Capacitance : Introduction to the capacitance of a two place capacitor
Circuits (part 1) : Introduction to electricity, circuits, current and resistance
Circuits (part 2) : Resistors in series
Circuits (part 3) : Resistors in parallel
Circuits (part 4) : A hairy resistance problem
Cross product 1
Cross Product 2 : A little more intuition on the cross product.
Cross Product and Torque : The cross product and the direction of torque.
Introduction to Magnetism
Magnetism 2 : Magnetic fields and their effects on moving electrical charges
Magnetism 3 : Whats happens when a speeding proton goes through a magnetic field
Magnetism 4 : Part 2 of the proton through a magnetic field problem
Magnetism 5 : Magnetic force on a wire carrying current.
Magnetism 6: Magnetic field due to current : See how a wire carrying a current creates a magnetic field.
Magnetism 7 : The magnetic force that two current-carrying wires exert on each other.
Magnetism 8 : More on the forces exerted by 2 current carrying wires on each other.
Magnetism 9: Electric Motors : Using a magnetic field to exert torque on a rotating circuit.
Magnetism 10: Electric Motors : Why the circuit will keep flipping over.
Magnetism 11: Electric Motors : Using a commutator to solve the flipping problem and create an electric motor.
Magnetism 12: Induced Current in a Wire : Induced current and EMF in a moving wire from a magnetic field.
The dot product
Dot vs. Cross Product : Understanding the differences between the dot and cross products
Calculating dot and cross products with unit vector notation
Fun Science: Sound
Fun Science: Light
Introduction to Waves : Introduction to transverse and longitudinal waves
Amplitude, Period, Frequency and Wavelength of Periodic Waves
Introduction to the Doppler Effect
Doppler effect formula for observed frequency
Doppler effect formula when source is moving away
When the source and the wave move at the same velocity
Specular and Diffuse Reflection
Specular and Diffuse Reflection 2
Refraction and Snell's Law
Refraction in Water
Snell's Law Examples 1
Snell's Law Example 2
Total Internal Reflection : Critical incident angle and total internal reflection
Parabolic Mirrors and Real Images
Parabolic Mirrors 2
Convex Parabolic Mirrors
Convex Lens Examples
Object Image and Focal Distance Relationship (Proof of Formula)
Object Image Height and Distance Relationship