Khan Academy: Identifying Force Vectors for Pendulum: Worked Example

Video explores the difference between vectors and scalars while discussing distance, displacement, speed and velocity. [8:38]

In this video, David from Khan Academy gives some problem solving strategies for centripetal force problems and explains many common misconceptions people have about centripetal forces. [14:59]

How to calculate the current through a resistor in parallel using equivalent resistance and Ohm's law. [4:32]

Identifying forces or force components acting as the centripetal force for a car driving in a horizontal circle, a car driving in a vertical circle, and a satellite in orbit.

Identifying forces or force components acting as the centripetal force for a ball on a string moving in a horizontal circle. [5:05]

This video shows the direction of the force in cases of circular motion at constant speeds. Several examples of centripetal force in everyday life are given. [10:46]

A review page discussing how to break down forces into the horizontal and vertical components when force is at an angle.

This passage will test your knowlege on normal forces.

Normal forces questions.

A worked example using Le Chatelier's principle to predict how concentrations will shift for different perturbations. The example includes changing reaction vessel volume, changing the amount of solid product, adding inert gas, and...