Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it started moving? You might think it's all about weight, but actually it's about friction. Two kinds of friction!...

What is torque? This is one of those things that you may have heard about in passing but never really understood. In this episode of Crash Course Physics, Shini sits down with us to discuss what torque is, how it works, why it works, and...

Drawing accurate free-body diagrams is essential for scoring points on the AP® Physics Exams. In this video, Mr. P, an actual AP® Physics Reader, shows you exactly how to draw free-body diagrams the way exam graders want to see them....

In this physics lesson, we break down how the force of friction always opposes sliding motion, whether it’s static or kinetic friction. Through clear demonstrations, motion tracking, and connections to Newton’s Laws of Motion, you’ll see...

This content delves into analyzing forces on an inclined plane, focusing on static and kinetic friction to control the motion of a box. Learn to calculate forces needed to prevent slipping, initiate upward movement, and maintain constant...

This content presents a solved physics problem that calculates the frictional force and acceleration of a 3.5 kg block pushed along a horizontal floor by a 15 N force at a 40° angle to the horizontal. It demonstrates the application of...

This content explains how to analyze forces on an inclined plane for a loaded box, differentiating between static and kinetic friction. It demonstrates calculations for the minimum force to prevent sliding down, the force to initiate...

This content analyzes the motion of a bowling ball as it transitions from sliding to smooth rolling on a lane. It explains the role of kinetic friction in simultaneously causing linear deceleration and angular acceleration. The video...

This content explores the kinetic energy of a rolling object, comprising both rotational kinetic energy (1/2 I omega^2) and translational kinetic energy (1/2 M v_com^2). It emphasizes energy conservation in rolling, the crucial role of...

Explore Newton's Laws of Motion with this physics problem. Determine if a block slides down a vertical wall when pushed by a horizontal force and calculate the wall's reaction force in unit-vector notation.

Dive into Unit 6 of AP Physics 1: Energy and Momentum of Rotating Systems! This video covers rotational kinetic energy, torque, work, angular momentum, rolling without slipping, and conservation laws. Watch as we connect linear and...

Friction is the resistance that one object or surface experiences when moving over another object or surface. The two types of friction that come into play when moving two objects against one another are static and kinetic. Static...

This section of the review covers mechanical energy, the Work-Energy Principle, and power. Mechanical energy is the sum of a system's kinetic, gravitational potential, and elastic potential energies. In this review, we emphasize how...

Newton’s Third Law states that for every force exerted by one object on another, the second object exerts an equal and opposite force on the first. These forces act simultaneously and are external to the system, meaning they don't...

Lotus isn’t the only one who has noticed that Ian is up to something… This lesson will explain how dynamic friction is dependent on the normal force and roughness of a surface, but independent of speed and apparent contact...

This problem is about finding the coefficient of kinetic friction for a block being pulled at an angle relative to a level surface.

This Quantitative/Qualitative Translation question also works as a part of the AP Physics C: Mechanics curriculum.

My solutions to Free Response Question #2 from the 2017 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam.

This Experimental Design question also works as a part of the AP Physics C:...

These are my solutions to the Multiple Choice section of the Mechanics portion of the 1998 AP Physics C released exam. AP® is a registered trademark of the College Board, which was not involved in the production of, and does not...

0:00 Intro

0:38 Vectors vs. Sc
alars
1:05 The Uniformly Accelerated Motion
Equations
2:
07 Accelerati
on
2:42 Velocity
3:03 Derivative
and Integral Definiti
ons
4:01 Projectile Motion
4:57...

This Free Response Question includes the following concepts: Free Body Diagrams (or Force Diagrams), Static and Kinetic Friction, Tension, Force Normal, Force of Gravity, Newton's Second Law (many times), a Multiple Bock System and a...

Enjoy learning from Billy as he solves a problem using Work due to Friction equals Change in Mechanical Energy.

Lesson 6 (Friction) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem1:...

Review of all of the Dynamics topics covered in the AP Physics 1 curriculum.