Khan Academy
Khan Academy: Centripetal Force and Acceleration Intuition
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]
PBS
Wnet: Thirteen: Circus Physics: Projectile Motion
Jugglers know that if you throw an object into the air, it will follow a curved path -- as the ball moves horizontally, gravity pulls it down vertically. Physicists call this projectile motion. In this video, you will learn why...
Khan Academy
Khan Academy: Mass Swinging in a Horizontal Circle
In this video, David from Khan Academy explains how to solve for the tension and speed of a mass swinging at an angle in a horizontal circle. [12:38]