Motion, forces, and energy | Physics | Khan Academy - Intro to forces (part 2) | Physics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:motion-and-forces/x6679aa2c65c01e53:forces/v/intro_to_forces_2 Want to explore more? Check out the full motion, forces, & momentum playlist here: https://www.youtube.com/playlist?list=PLSQl0a2vh4HCiFE95STYVxTZ6Ep402vfa A free body diagram (FBD) models the forces acting on an object. The object is replaced by a square. The individual force vectors are shown as arrows, and magnitudes usually measured in newtons. To determine the net force in the horizontal (x) or vertical (y) direction, add forces pointing in the same direction, and subtract forces in the opposite direction. Sections: 00:00 - Intro 00:44 - Properties of forces (vectors, units) 02:15 - How to construct a free body diagram (FBD) 04:27 - Find net force from a FBD 07:01 - FBD of forces on a chair 07:55 - Net force on the chair ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc