Previously, we looked at the basics of motion, and the standard SI units used when dealing with kinematics problems. Now its time to take a calculus perspective on this subject and see how displacement, velocity, and acceleration are influenced by one another, and how to mathematically represent them. Its important to note that velocity is the rate of change over time of displacement, and acceleration is the rate of change over time of velocity; youll need these facts throughout the entirety of the AP physics course. For simple problems that use a constant of something (a car travelling 110 Km/Hr while not accelerating) you can use certain kinematic equations to solve based on the variable you dont have. These 5 equations are easily implemented, and can be derived in a situation where you dont have them in front of you. The important thing to remember is how to use and understand how to obtain these 5 equations for 1 dimensional motion.
An object’s position is its location at a given point in time.
The vector from the origin to the object’s position is the position vector, r.
The change in an object’s position is called displacement.
Velocity is the time rate of change of displacement: v=dx/dt.
Acceleration is the time rate of change of velocity: a=dv/dt.
The slope of the position-time graph is the velocity. The slope of the velocity-time graph is the acceleration.
The area under the acceleration-time graph gives you change in velocity. The area under the velocity-time graph gives you change in position.
For cases of constant acceleration, you can utilize the kinematic equations to solve for unknown quantities.
Objects under the force of gravity only are said to be in free fall.
The acceleration due to gravity on the surface of Earth is 9.8 meters per second per second toward the center of the Earth.
Describing Motion II
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Physics C concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes 2 full length practice exams modeled on the real test, 3 separate plans to fit your study stle, review material updated to the most recent tests, and all the terms and concepts you need to know.