Khan Academy: Deriving the Shortcut to Solve Elastic Collision Problems

In this video,learn how to solve elastic collision problems the hard way. The hard way means using the conservation of momentum and conservation of kinetic energy by substituting one equation into the other and solves for the final...

In this video, learn how to solve an elastic collision problem to find the final velocities using the shortcut approach. [10:19]

Solve a collision of balls in two dimensions problem using the conservations of momentum in this video. Video gives a step-by-step explanation of how to solve the problem to figure out what direction and velocity the balls travel after...

Learn why objects fall to the ground with Newton's Law of Universal Gravitation as explained by this video. Video will explain history of discovery of the concept of gravity. It will also show how to solve for the force of gravity. [15:42]

Video tutorial uses examples and formulas to show how to derive displacement as a function of time, constant acceleration, and initial velocity. [9:57]

This video will show you how to count electrons by understanding formal charges and oxidation states. [5:45]

This video lecture will use the Universal Law of Gravitation to calculate the acceleration due to gravity at the surface of the Earth. Video will then calculate the space station's acceleration due to gravity. [10:12]

Learn the basics of peptide bonds and how different amino acids combine to form different proteins. Also discussed is the difference in function and structure of proteins.

Continuing the algebra to solve for the Lorentz factor. [6:07]

Sal uses the molar version of the ideal gas law to solve for the number of moles in a gas. He also shows how to convert this answer into number of molecules using Avogadro's number. [8:01]