
Conservation of Momentum
If an external force is not applied to a system, then momentum is conserved. For example, consider one dimensional motion, and suppose there are two objects $A$ and $B$ with masses $m_A$ and $m_B$, respectively. If the initial velocity of object $A$ is $v_{A_i}$ and the initial velocity of object $B$ is $v_{B_i}$, then $m_A…

Newton’s Second Law
Newton’s Second Law is symbolically written as $ \vec{F}_{net} = m \vec{a}$. Here, $\vec{F}_{net}$ is the net force on an object with nonzero mass $m$. If the object has a mass of zero, such as a photon, Newton’s second law indicates that the net force on the object would be the zero vector. If the…

Simple Interest and Compound Interest
Here is a series of videos I made about simple interest and compound interest. Simple Interest and Compound Interest Semiannual Interest A Special Case of the Compound Interest Formula

Discovery of the Logarithm by John Napier
Here is a short series of videos I made about the discovery of the Logarithm. John Napier is credited with the discovery of the logarithm, and Leonhard Euler developed the logarithm used today. The contents of the following videos are based on Reference 1. Part 1 Part 2 Part 3 Part 4 References [1] e, The…