In this video Paul Andersen explains hot the force-time graph can be used to determine the impulse of an object. Since the impulse and the change in momentum are equivalent the graph can also be used to determine the change in momentum...

In this video Paul Andersen explains that the angular momentum of a system will be conserved as long as there is no net external torque. Both point objects and extended objects are covered along with several examples.

In this video Paul Andersen explains how linear momentum is conserved in all collisions. In completely elastic collisions the kinetic energy of the objects is also maintained. Several examples and demonstrations are included.

In this video Paul Andersen explains how the linear momentum is equal to the product of the mass of an object and the velocity of the center of mass. He uses video analysis software to calculate the velocity of an object and therefore...

In this video Paul Andersen explains how the energy, charge, and momentum in a system is conserved over time.

In this video Paul Andersen explains rotating object have angular momentum. The angular momentum of a point object is the product of the distant from the center of rotation and the linear momentum. The angular momentum of an extended...

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...

In this video Paul Andersen compares and contrasts elastic and inelastic collisions. In all collisions the linear momentum will be conserved. In an elastic collision the kinetic energy of the objects will also be maintained. Several...

Master the concept of mechanical equilibrium—where net force and net torque are zero. Learn how to apply Newton’s First Law to both translational and rotational scenarios with real-world examples and exam-focused explanations.

This content defines angular momentum (ℓ) for a particle as the cross product of its position vector (r) and linear momentum (p), i.e., ℓ=r×p=m(r×v). It clarifies that angular momentum is a vector quantity defined with respect to a...

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...

Ready to ace the AP Physics 1 exam? In this Unit 4 review, we break down everything you need to know about linear momentum, impulse, and types of collisions. We'll cover key concepts like momentum as a vector, Newton's Second Law in...

This problem is about relating the angular velocity of a wheel to its linear momentum.

My solutions to Free Response Question #5 from the 2018 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam.

This Paragraph Argument Short Answer question also works as a part of the AP Physics...

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...

This Free Response Question includes the following concepts: Center of Mass of a System of Particles, Translational and Rotational Kinetic Energy, Conservation of Linear and Angular Momentum, Angular Momentum of a System of Particles and...

Equations to memorize for the AP Physics 1 Exam.

Angular Momentum as the cross product is demonstrated and derived. This is an AP Physics C: Mechanics topic.
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As much as we commonly misuse scientific words in common language, we do have a reasonable grasp of the word momentum. But that's no reason to gloss over this concept, we have to know all the definitions and equations there are! Check...

The equation for #AngularMomentum of #RigidObjects with shape is introduced and a simple example of angular momentum is solved for.

Calculus based review of the cross product torque equation, how to do a unit vector cross product problem, rotational equilibrium, the rotational form of Newton’s second law, the angular momentum of a particle and of a rigid object with...

A ballistic pendulum is demonstrated and a full solution is worked out including real numbers and variable comparisons. Want Lecture Notes or Animated GIFs?ef='https://www.flippingphysics.com/ballistic-pendulum.html' target='_blank'...

For a system of particles in translational motion, we determine the position, velocity, acceleration, linear momentum, and net force.
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Several demonstrations of #AngularMomentumConservation are shown using a rotating stool. The equations is also derived using Newton’s Second Law. Conservation of the direction of angular momentum is also demonstrated.