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# Class Notes for Physics at Western University

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###### 24HR Notes

The notes and past exams you need. Available 24 hours after each lecture.

##### Physics 1028A/B Lecture 8: C8 - Momentum & Collisions

8.1 Momentum and Collisions the momentum of an object is defined as the product of the objects mass and velocity. = momentum will always be in the same direction as that of the velocity of the object. the components of mom...

Physics
Physics 1028A/B
Tamie Poepping
##### Physics 1401A/B Lecture Notes - Lecture 16: One Direction Premium

Collisions Elastic Inelastic Collisions A collision changes the velocitiesof the objects involved Since the kinetic energy of an object depends on its speed, the kinetic energy of the object also changes as a result of th...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 13: Kinetic Energy, Mechanical Energy Premium

Potential Energy Potential Energy: The stored energy an object has that can be convertedinto another form of energy Kinetic energy potential energy can transform into the other as work is done on or by an object Mechanica...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 17: Angular Acceleration, Angular Displacement, International System Of Units Premium

Angular Velocity Acceleration Angular Velocity Angular velocity:the rate at which a body rotates The rate of which the angular position of any point on the body changes Average angular velocity: Si units: rads Angular dis...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 12: Mechanical Energy, Isolated System Premium

Conservation of Energy Law of Conservation of Energy: Energy is neither created nor destroyed,It can only change form Systems Isolated system:a system that cannot interact or exchange energy with external systems;also call...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 14: Geosynchronous Orbit, Orbital Speed Premium

Newtonian Gravitation Universal Gravitation There is a gravitational attraction between any two objects Gravitationalconstant ( ): Inverse-square law: mathematicalrelationship in which one variable is proportionalto the in...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 15: Tennis Ball, Momentum, Net Force Premium

Momentum Impulse Linear momentum ( ) a quantity that describes the motionof an object travelling in a straight line as the product of its mass and velocity The momentum of an object is directly proportional to the objects...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 11: International System Of Units Premium

Energy Power Energy Kinetic Energy Kinetic energy (): the energy an object has because of its motion Workenergy theorem: the total work done on an object equals the change in its kinetic energy Gravitational Energy Gravit...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 9: Dot Product Premium

Work Work: the product of the magnitude of an objects displacement and the component of the applied force in the direction of the displacement Scalar product SI unit: Joule 4.186 J = 1 Cal (100 calories) Work depends on th...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 6: Contact Force, Net Force, Normal Force Premium

Forces Free-Body Diagrams Forces Force ( ): a push or a pull that causes a change in motion Measure in SI system of units is newton ( ) Contact force: force that acts between two objects when they touch each other Non-con...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 10: Simple Harmonic Motion, Elastic Energy, Perpetual Motion Premium

Elastic Potential Energy Simple Harmonic Motion Spring Forces Hookes law: the amount of force exerted by a spring is directly proportional to the displacement of the spring force exerted by the spring on whatever stretche...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 5: Circular Motion, Centripetal Force, Net Force Premium

Uniform Circular Motion Uniform circularmotion: an object with a constant speed along a circular path of constant radius Although speed is constant, the motionis acceleratedbecause the direction of the velocity is changing...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 7: Net Force Premium

Newtons Laws of Motion Newtons First Law of Motion If the external net force on an object is zero, the object will remain at rest or continue to moveat a constant velocity (uniform motion) A net force is not required for a...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 8: Friction Premium

Friction Friction: a force that opposes the relative motion of 2 surfaces in contact An electrical force between moleculesin different surfaces Frictional force is parallel to the 2 surfaces Kinetic Friction Coefficient of...

Physics
Physics 1401A/B
Andrea Soddu
##### Physics 1401A/B Lecture Notes - Lecture 2: Free Fall Premium

Motion Graphs Motion Graphs Time ( ) is always plotted along theaxis Position-Time Graph Position is plotted along the axis the positiontimegraph of an acceleratedmotion is curved Slope at any time is the instantaneous vel...

Physics
Physics 1401A/B
Andrea Soddu
##### Thermodynamics - Reference Guides

This detailed and well structured Guide builds upon the Physics principles defined in its companion Guides. The basic concepts are clearly and concisely defined and the laws of Thermodynamics are clearly articulated. Graph...

Chemistry
CHEM 11100
All Professors
##### Physics - Reference Guides

This Guide is an aid to understanding one of the essential ‘hard’ sciences. Concepts such as mechanics and magnetism are explained in clear terms, aided by a number of useful examples and equations. The Guide provides the ...

Basic Engineering
BE 1101
All Professors
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