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The variables include acceleration (a), time (t), displacement (d), final velocity (vf), and initial velocity (vi). If values of three variables are known, then the others can be calculated using the equations. This page demonstrates the process with 20 sample problems and accompanying solutions.
- Kinematic Equations
Kinematic equations relate the variables of motion to one...
- Problem-Solving Strategy
The solution above reveals that the car will skid a distance...
- Problem Set
This collection of problem sets and problems target student...
- Kinematic Equations
College Physics Answers is the best source for learning problem solving skills with expert solutions to the OpenStax College Physics and College Physics for AP® Courses textbooks.
Express your answers to problems in this section to the correct number of significant figures and proper units.
- Unit Conversion Examples
- Coupled Systems Example Problems
- Friction Example Problems
- Momentum and Collisions Example Problems
- Simple Pendulum Example Problems
- Harmonic Motion and Waves Example Problems
- Heat and Energy Example Problems
- Charge and Coulomb Force Example Problems
There are now too many unit conversion examples to list in this space. This Unit Conversion Examplespage is a more comprehensive list of worked example problems.
Coupled systems are two or more separate systems connected together. The best way to solve these types of problems is to treat each system separately and then find common variables between them. Atwood Machine The Atwood Machine is a coupled system of two weights sharing a connecting string over a pulley. This example problem shows how to find the ...
These example physics problems explain how to calculate the different coefficients of friction. Friction Example Problem – Block Resting on a Surface Friction Example Problem – Coefficient of Static FrictionFriction Example Problem – Coefficient of Kinetic Friction Friction and Inertia Example Problem
These example problems show how to calculate the momentum of moving masses. Momentum and Impulse Example Finds the momentum before and after a force acts on a body and determine the impulse of the force. Elastic Collision Example Shows how to find the velocities of two masses after an elastic collision. It Can Be Shown – Elastic Collision Math Step...
These example problems show how to use the period of a pendulum to find related information. Find the Period of a Simple Pendulum Find the period if you know the length of a pendulum and the acceleration due to gravity. Find the Length of a Simple Pendulum Find the length of the pendulum when the period and acceleration due to gravity is known. Fin...
These example problems all involve simple harmonic motion and wave mechanics. Energy and Wavelength Example This example shows how to determine the energy of a photon of a known wavelength. Hooke’s Law Example Problem An example problem involving the restoring force of a spring. Wavelength and Frequency Calculations See how to calculate wavelength ...
Heat of Fusion Example Problem Two example problems using the heat of fusion to calculate the energy required for a phase change. Specific Heat Example Problem This is actually 3 similar example problems using the specific heat equation to calculate heat, specific heat, and temperature of a system. Heat of Vaporization Example Problems Two example ...
Electrical charges generate a coulomb force between themselves proportional to the magnitude of the charges and inversely proportional to the distance between them. Coulomb’s Law Example This example problem shows how to use Coulomb’s Law equation to find the charges necessary to produce a known repulsive force over a set distance. Coulomb Force Ex...
- Coach Sweeney walks 26 yards to the north along the sideline, pauses, and walks 12 yards back to the south. a. Determine the distance which Coach moved.
- a. Rosa Boat is paddling upstream at 1.25 m/s relative to the water in a river which is flowing at 0.50 m/s relative to the banks of the river.
- The takeoff speed of a military aircraft from an aircraft carrier is approximately 170 mi/hr relative to the air. They acquire this speed through a combination of a catapult system present on the aircraft carrier and the aircraft's jet propulsion system.
- Claire de Iles is shopping. She walks 16 m to the end of an aisle. She then makes a right hand turn and walks 21 m down the end aisle. Determine the magnitude of Claire's resultant displacement.
This collection of problem sets and problems target student ability to use vector principles and operations, kinematic equations, and Newton's Laws to solve physics word problems associated with objects moving in two dimensions.
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Answers. When answers to exercises are provided in the books they are also posted here, including all exercises from Feynman's Tips on Physics, most exercises from Exercises in Introductory Physics, and the majority of exercises from Volume I of Exercises for The Feynman Lectures on Physics.
