Courses
Teacher-curated, self-paced courses. Looking for a guided sequence through a full topic? See Learning Paths.
2 courses
Friction and Circular Motion
Physics · High School (11–12) · Friction, Newton's Laws of Motion, Circular Motion
FreeCh 4 · 3/4
Friction stops a sliding box, and it also lets you walk and a car turn a corner. In this course we study static and kinetic friction, a block on a rough slope, and the force that keeps a body on a circle, which decides the safe speed of a car on a flat bend and on a banked road.
3Lessons12Problems3Python Labs1Question Set1Mock Test
Forces and the First Law
Physics · High School (9–10), General · Newton's Laws of Motion, Friction
FreeCh 2 · 1/3
You push a door. You pull a rope. Gravity pulls you down. All of these are forces. Here we learn how to add forces together and how to tell if they are balanced. Then we meet Newton's first law, and we see why a moving thing likes to keep moving.
3Lessons6Problems1Python Lab1Question Set1Mock Test