Mr. Anderson illustrates the concept that forces on an object always require another object, and that an object cannot exert a force on itself. If net forces on an object are balanced the object will remain at rest or move with a...

In the following video Paul Andersen explains for the position of an object over time can be used to calculate the velocity and acceleration of the object. If a net force acts on a object it will experience an acceleration. [7:55]

Calculate the coefficient of kinetic friction for a block that is on an incline plane with this video lecture. Video includes a step-by-step process for solving these types of problems. [9:09]