Imagine you want to study what happens when an object accelerates. Oh, this is way before any of that internet stuff—also, no computers or electronics. In fact, let's say it's the year 1780. What do ...

This video guides you through the process of calculating the acceleration of a block sliding down an inclined plane with friction. We break down the forces involved and show how to apply Newton’s laws ...

It's perhaps the second week of your introductory physics course. Your instructor starts talking about friction and writes the following two formulas on the board. Then there is probably some sort of ...