Learn about velocity, force, arm trajectory, and more in this exploration of baseball pitching physics. [8:33]

In this video, review 1D motion for AP Physics 1. Review over the concepts covered in the course on in 1D motion. Concepts are reviewed conceptually and example problems worked. [16:02]

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]

Sal Khan looks at the speed necessary for the space station to stay in orbit. [6:35]

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]

Students will be asked to find the minimum speed necessary to complete the loop de loop shown in the video. [3:00]

Watch as Sal Khan figures out a car's average speed while completing a loop de loop. [4:47]

Watch as Sal Khan figures out the minimum speed at the top of a loop de loop for a car stay on the track. [6:04]

This video gives a visual understanding of how centripetal acceleration relates to velocity and radius. [9:47]

Using a racetrack as an example, this video demonstrates when acceleration could involve a change in direction and not speed.

Sal Khan explains how to derive the formula for centripetal acceleration in terms of angular velocity using linear speed formula. [5:29]

In this video,you will find out how to determine acceleration by knowing the runway length and take-off velocity. Video includes step-by-step process to solve this problem. [14:15]

In this video David shows how to relate the angular displacement to the arc length, angular velocity to the speed, and angular acceleration to the tangential acceleration. [14:36]

Let's use Einstein velocity addition to find a frame of reference where A and B are traveling in opposite directions at the same speed. [8:11]

Watch as Sal Khan predicts which spinning disc has a larger radius from angular velocity and the linear velocity of a point on the edge. [3:58]

Sal Khan explains linear velocity from the radius and angular velocity using two pumpkin catapults with different arm lengths as an example. [5:30]

In this video, Sal Khan will finish writing the formula for distance as a function of the angle. [2:38]

You want a projectile to fly as far as possible, at which angle should you launch it? We'll start with formulas for the initial velocity. [5:49]

Investigate how to use force vs. time graph to find the change in momentum in this video. See how to solve an example problem to find the final velocity of a spaceship. [8:13]

A video exploring momentum and how it is beyond its equation of mass times velocity. [9:18]

This video solves the problem of how long of a runway an A380 needs. [5:29]

Sal Khan figures out how long it takes an A380 to take off given a constant acceleration. [8:08]

In this video, David derives the expression that we can use as a shortcut to solve for finding the velocities in an elastic collision problem. [12:21]

Examine different types of hockey sticks while watching kids use the scientific method to learn how a hockey stick's flex affects shooting power and accuracy.