join the ap-physics-1 course
🎖️fiveable certificate upon completion
ap physics 1
👉 AP Physics Essentials
👟 Unit 1 - Kinematics
1.1Position, Velocity, and Acceleration
🌀 Unit 2 - Dynamics
2.5Newton's Third Law and Free-Body Diagrams
🚀 Unit 3 - Circular Motion
3.0Unit 3 Overview: Circular Motion and Gravitation
3.3Gravitational and Electric Forces
3.4Gravitational Field/Acceleration Due to Gravity on Different Planets
3.5Inertial vs. Gravitational Mass
3.7Free-Body Diagrams for Objects in Uniform Circular Motion
⚡️ Unit 4 - Energy
4.1Open and Closed Systems: Energy
4.2Work and Mechanical Energy
⛳️ Unit 5 - Momentum
🎸 Unit 6 - Simple Harmonic Motion
6.1Period of Simple Harmonic Oscillators
🎡 Unit 7 - Torque & Rotational Motion
7.2Torque and Angular Acceleration
7.3Angular Momentum and Torque
💡 Unit 8 - Electric Charges & Electric Force
8.0Unit 8 Overview: Electric Charge and Electric Force
8.1Conservation of Charge
🔋 Unit 9 - DC Circuits
9.1Definition of a Circuit
9.3Ohm’s Law, Kirchhoff’s Loop Rule (Resistors in Series and Parallel)
🔊 Unit 10 - Mechanical Waves & Sound
10.1Properties of Waves
10.3Interference and Superposition (Waves in Tubes and on Strings)
✍️ Free Response Questions (FRQs)
Paragraph Length Response
September 23, 2020
A system is an object or a collection of objects. Objects are treated as having no internal structure.
Key Concept: System - an object or a collection of two or more objects that are treated as having no internal structure. A system approach is often used to find the acceleration (F = ma, according to Newton’s Second Law of Motion) in which the total mass of the system is used.
Equation: ΣF = ma
Systems have properties that are determined by the properties and interactions of their constituent atomic and molecular substructures. In AP Physics, when the properties of the constituent parts are not important in modeling the behavior of the macroscopic system, the system itself may be referred to as an object.
Only external forces affect a system’s motion according to Newton’s First Law (an object at rest tends to stay at rest, and an object in motion tends to stay in motion). Because of this distinction, we must define the boundaries of a system before we can understand what forces are affecting its motion.
Image courtesy of physics.stackexchange.com
Illustrated in the image above, this particular system is comprised of a two-block pulley contraption with one of the blocks located on a table. A defining characteristic of a system is that the objects will accelerate together with the same magnitude. In addition, internal interactions such as tension have minimal changes or none at all which is why it can be regarded as a singular entity.
2550 north lake drive
milwaukee, wi 53211
92% of Fiveable students earned a 3 or higher on their 2020 AP Exams.
*ap® and advanced placement® are registered trademarks of the college board, which was not involved in the production of, and does not endorse, this product.
© fiveable 2020 | all rights reserved.