en physics khanacademy 5/5 (1)

URL
HTML code
reported by (19 courses)
updated
76,023 views

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

Lessons

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

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

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

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

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

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

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

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

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
865 views

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

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

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

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

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

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

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

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

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

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

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

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
748 views

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

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
853 views

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

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

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

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

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

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. ...
721 views

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

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

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

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

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

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
863 views

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

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
754 views

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

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
843 views

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

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

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

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

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
790 views

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

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 ...
709 views

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

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

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

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

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

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

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
837 views

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

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

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

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

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

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

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

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

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

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 ...
705 views

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
726 views

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

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

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

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

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
760 views

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
807 views

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

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

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

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

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

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

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

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
782 views

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
740 views

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-
700 views

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
630 views

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
665 views

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

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

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

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
699 views

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

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

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

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

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
621 views

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

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

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

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 ...
750 views

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

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

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