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Physics - Khan Academy

Physics - Khan Academy

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Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

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Distance, displacement, speed and velocity. Difference between vectors and scalars More free lessons at: http://www.khanacademy.org/video?v=ihNZl

Example of calculating speed and velocity More free lessons at: http://www.khanacademy.org/video?v=oRKxm

Simple example of solving for time given distance and rate More free lessons at: http://www.khanacademy.org/video?v=awzOv

Worked example of calculating displacement from time and velocity More free lessons at: http://www.khanacademy.org/video?v=lQ-dv

Calculating the acceleration of a Porshe More free lessons at: http://www.khanacademy.org/video?v=FOkQs

Newton's First Law (Galileo's Law of Inertia). More free lessons at: http://www.khanacademy.org/video?v=CQYEL

Newton's Second Law of Motion: F=ma More free lessons at: http://www.khanacademy.org/video?v=ou9YM

Every action has an equal and opposite reaction More free lessons at: http://www.khanacademy.org/video?v=By-gg

Figuring how long it takes an a380 to take off given a constant acceleration More free lessons at: http://www.khanacademy.org/video?v=p4DTo

How long of a runway does as a380 need More free lessons at: http://www.khanacademy.org/video?v=fQt69

Understanding why distance is area under velocity-time line More free lessons at: http://www.khanacademy.org/video?v=d-_eq

Calculating average velocity when acceleration is constant More free lessons at: http://www.khanacademy.org/video?v=MAS6m

Using what we know about takeoff velocity and runway length to determine acceleration More free lessons at: http://www.khanacademy.org/video?v=VYgSX

When acceleration could involve a change in direction and not speed More free lessons at: http://www.khanacademy.org/video?v=ITA1r

Basics of gravity and the Law of Universal Gravitation More free lessons at: http://www.khanacademy.org/video?v=Xcel4

Difference between mass and weight More free lessons at: http://www.khanacademy.org/video?v=IuBoe

Why do astronauts appear weightless despite being near the Earth? More free lessons at: http://www.khanacademy.org/video?v=oIZV-

What would fall faster on the moon? More free lessons at: http://www.khanacademy.org/video?v=36Rym

Deriving displacement as a function of time, constant acceleration and initial velocity More free lessons at: http://www.khanacademy.org/video?v=wlB0x

Plotting projectile displacement, acceleration, and velocity as a function to change in time More free lessons at: http://www.khanacademy.org/video?v=T0zpF

Figuring out how high a ball gets given how long it spends in the air More free lessons at: http://www.khanacademy.org/video?v=IYS4B

Deriving a formula for maximum projectile displacement as a function of elapsed time More free lessons at: http://www.khanacademy.org/video?v=P7LKE

Determining how fast something will be traveling upon impact when it is released from a given height More free lessons at: http://www.khanacademy.org/video?v=2ZgBJ

Visualizing, adding and breaking down vectors in 2 dimensions More free lessons at: http://www.khanacademy.org/video?v=xp6ib

Figuring out the horizontal displacement for a projectile launched at an angle More free lessons at: http://www.khanacademy.org/video?v=ZZ39o

Another way to determine time in the air given an initial vertical velocity More free lessons at: http://www.khanacademy.org/video?v=_NWc3

More complicated example involving launching and landing at different elevations More free lessons at: http://www.khanacademy.org/video?v=a5QnX

Reconstructing the total displacement vector for a projectile More free lessons at: http://www.khanacademy.org/video?v=UXORC

Calculating the total final velocity for a projectile landing at a different altitude (mistake near end: I write 29.03 when it should be 26.03 m/s and the final total magnitude should be 26.55 m/s 78. ...

Correction to "Total Final Velocity for Projectile" Video More free lessons at: http://www.khanacademy.org/video?v=DNoDJ

Challenging problem of a projectile on an inclined plane More free lessons at: http://www.khanacademy.org/video?v=jNESn

Using unit vectors to represent the components of a vector More free lessons at: http://www.khanacademy.org/video?v=2Qjdc

Optimal angle for a projectile part 2 - Hangtime More free lessons at: http://www.khanacademy.org/video?v=XtAB9

Horizontal distance as a function of angle (and speed) More free lessons at: http://www.khanacademy.org/video?v=-h_x8

The force that keeps a block of ice from falling towards the center of the earth More free lessons at: http://www.khanacademy.org/video?v=1WOrg

How the normal force changes when an elevator accelerates More free lessons at: http://www.khanacademy.org/video?v=hoRsH

Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane More free lessons at: http://www.khanacademy.org/video?v=TC23w

Figuring out the acceleration of ice down a plane made of ice More free lessons at: http://www.khanacademy.org/video?v=Mz2nD

Block of wood kept stationary by the force of friction (Correction made in next video) More free lessons at: http://www.khanacademy.org/video?v=v8ODI

Correction to Force of Friction Keeping the Block Stationary More free lessons at: http://www.khanacademy.org/video?v=BukTc

Calculating the coefficient of kinetic friction (correction made in next video) More free lessons at: http://www.khanacademy.org/video?v=iA7Th

Why static friction is harder to overcome than kinetic friction More free lessons at: http://www.khanacademy.org/video?v=J9BWN

Thinking about the coefficients of static and kinetic friction More free lessons at: http://www.khanacademy.org/video?v=ZA_D4

An introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them. More free lessons at: http://www.khanacademy.org/video?v=_UrfH

A slightly more difficult tension problem. More free lessons at: http://www.khanacademy.org/video?v=zwDJ1

The second part to the complicated problem. We figure out the tension in the wire connecting the two masses. Then we figure our how much we need to accelerate a pie for it to safely reach a man's f ...

What momentum is. A simple problem involving momentum. More free lessons at: http://www.khanacademy.org/video?v=XFhnt

A simple conservation of momentum problem involving an ice skater and a ball More free lessons at: http://www.khanacademy.org/video?v=vPkkC

An example of conservation of momentum in two dimensions. More free lessons at: http://www.khanacademy.org/video?v=CFygK

We finish the 2-dimensional momentum problem More free lessons at: http://www.khanacademy.org/video?v=leudx

Introduction to work and energy More free lessons at: http://www.khanacademy.org/video?v=2WS1s

More on work. Introduction to Kinetic and Potential Energies. More free lessons at: http://www.khanacademy.org/video?v=3mier

Using the law of conservation of energy to see how potential energy is converted into kinetic energy More free lessons at: http://www.khanacademy.org/video?v=kw_4L

A conservation of energy problem where all of the energy is not conserved. More free lessons at: http://www.khanacademy.org/video?v=YvacY

Introduction to simple machines, mechanical advantage and moments. More free lessons at: http://www.khanacademy.org/video?v=pfzJ-

More on mechanical advantage, levers and moments. More free lessons at: http://www.khanacademy.org/video?v=DiBXx

Introduction to pulleys and wedges More free lessons at: http://www.khanacademy.org/video?v=vSsK7

Introduction to the center of mass More free lessons at: http://www.khanacademy.org/video?v=VrflZ

An introduction to torque More free lessons at: http://www.khanacademy.org/video?v=QhuJn

Introduction to moments More free lessons at: http://www.khanacademy.org/video?v=ESusD

2 more moment problems. More free lessons at: http://www.khanacademy.org/video?v=peXbz

Expressing a vector as the scaled sum of unit vectors More free lessons at: http://www.khanacademy.org/video?v=FaF3v

More on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method More free lessons at: http://www.kh ...

Solving the second part to the projectile motion problem (with wind gust) using ordered set vector notation More free lessons at: http://www.khanacademy.org/video?v=jl_gQ

The direction of the force in cases of circular motion at constant speeds More free lessons at: http://www.khanacademy.org/video?v=vZOk8

Visual understanding of how centripetal acceleration relates to velocity and radius More free lessons at: http://www.khanacademy.org/video?v=NH1_s

How angular velocity relates to speed More free lessons at: http://www.khanacademy.org/video?v=zAx61

Proving that a = v^2/r More free lessons at: http://www.khanacademy.org/video?v=XjCEu

Asks students to find the minimum speed necessary to complete the loop de loop More free lessons at: http://www.khanacademy.org/video?v=wjZb3

Figuring out the minimum speed at the top of the loop de loop to stay on the track More free lessons at: http://www.khanacademy.org/video?v=4SQDy

Figuring out the car's average speed while completing the loop de loop More free lessons at: http://www.khanacademy.org/video?v=zcnnZ

What is the acceleration due to gravity at the space station More free lessons at: http://www.khanacademy.org/video?v=R5CRZ

Speed necessary for the space station to stay in orbit More free lessons at: http://www.khanacademy.org/video?v=9BNkm

Angular momentum is constant when there is no net torque. More free lessons at: http://www.khanacademy.org/video?v=s_R8d

A little bit on gravity More free lessons at: http://www.khanacademy.org/video?v=391tx

A little bit more on gravity More free lessons at: http://www.khanacademy.org/video?v=8i0j3

Introduction to Hooke's Law More free lessons at: http://www.khanacademy.org/video?v=ZzwuH

Work needed to compress a spring is the same thing as the potential energy stored in the compressed spring. More free lessons at: http://www.khanacademy.org/video?v=eVl5z

A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!) More free lessons at: http://www.khanacademy.org/video?v=P3QV9

Intuition behind the motion of a mass on a spring (some calculus near the end). More free lessons at: http://www.khanacademy.org/video?v=Nk2q-

We test whether Acos(wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx More free lessons at: http://www.khanacademy.org/video?v=xoUpp

Figuring out the period, frequency, and amplitude of the harmonic motion of a mass attached to a spring. More free lessons at: http://www.khanacademy.org/video?v=oqBHB

What a fluid is. Difference between liquids and gasses (both fluids). More free lessons at: http://www.khanacademy.org/video?v=Pn5YE

Pressure and Pascal's Principal. More free lessons at: http://www.khanacademy.org/video?v=lWDtF

Pressure in a fluid at depth More free lessons at: http://www.khanacademy.org/video?v=5EWjl

Using our understanding of fluid pressure to figure out the height of a column of mercury. More free lessons at: http://www.khanacademy.org/video?v=i6gz9

Introduction to Archimedes' principle and buoyant force. More free lessons at: http://www.khanacademy.org/video?v=vzID7

A couple of problems involving Archimedes' principle and buoyant forces. More free lessons at: http://www.khanacademy.org/video?v=wwjtu

Introduction to the study of moving fluids. More free lessons at: http://www.khanacademy.org/video?v=G4CgO

Beginning of the proof of Bernoulli's Equation. More free lessons at: http://www.khanacademy.org/video?v=uqyLO

Second part of the Bernoulli's Equation proof. Beginning of a problem that uses the equation. More free lessons at: http://www.khanacademy.org/video?v=QX2YL

Second part of the example that uses Bernoulli's equation. More free lessons at: http://www.khanacademy.org/video?v=NGpJP

Clarification of the problem in part 10 More free lessons at: http://www.khanacademy.org/video?v=HnfBF

Complete example of a Bernoulli's Equation exercise. More free lessons at: http://www.khanacademy.org/video?v=xlJYY

Intuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the molecules in the volume. More free lessons at: http://www.khana ...

Example problem that pv=pv. Introduction to temperature. More free lessons at: http://www.khanacademy.org/video?v=x34OT

Introduction to Kelvin. Example of a problem involving the ideal gas law More free lessons at: http://www.khanacademy.org/video?v=HvYUK

Introduction to the concept of a mole. Universal gas constant R. PV=nRT More free lessons at: http://www.khanacademy.org/video?v=5B1i2
 

 

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