The final mathematical quantity discussed in Lesson 1 is acceleration. An often confused quantity, acceleration…

Since a moving object often changes its speed during its motion, it is common to…

As an object moves, it often undergoes changes in speed. For example, during an average…

Velocity is a vector quantity that refers to "the rate at which an object changes its position." Imagine…

Just as distance and displacement have distinctly different meanings (despite their similarities), so do speed…

Distance and displacement are two quantities that may seem to mean the same thing yet…

Physics is a mathematical science. The underlying concepts and principles have a mathematical basis. Throughout…

Describing Motion with Words Introduction to the Language of Kinematics IntroductionScalars and VectorsDistance and DisplacementSpeed…

A blackbody refers to an opaque object that emits thermal radiation. A perfect blackbody is one that absorbs…

Newton's Law of Cooling states that the rate of change of the temperature of an…