1. Momentum
1.1. describes the motion of mass
1.2. inertia in motion
1.3. describes how difficult it is to stop an object's intertial motion
1.4. p = mv
1.5. vector quantity
2. Conservation of Energy
2.1. in all systems, energy can be stored and transferred, but cannot be created or destroyed
2.2. in many real-life situations, energy tends to dissipate throughout the environment, generally due to friction resulting in heat transfer.
2.3. when friction is small enough to be ignored, the mechanical energy of a closed system does not change
2.4. Momentum is conserved in ALL types of collisions. Kinetic energy IS conserved in elastic collisions, but is NOT conserved in inelastic collisions.
3. Conservation of Momentum
3.1. the total momentum of the system before a collision equals the total momentum of the system after the collision.
3.2. for elastic collisions
3.3. for perfectly inelastic collisions
3.4. Momentum is conserved in ALL types of collisions. Kinetic energy IS conserved in elastic collisions, but is NOT conserved in inelastic collisions.
4. Impulse
4.1. a force acting for a given amount of time to change an object's momentum
4.2. .
4.3. equals the change in momentum of an object
4.4. .
5. Work
5.1. a transfer of energy by a force acting through a distance, when that force acts in the direction of motion of the object
5.1.1. depends in direction; the force must be in the same direction as the motion to perform work.
5.1.2. any part of a force that does not act in the direction of motion does no work.
5.2. a transfer of energy
5.2.1. work done setting an object in motion = change in kinetic energy
5.2.2. work done lifting an object vertically = the change in gravitational PE
5.2.3. work done stretching or compressing a spring = change in elastic PE
5.3. .
5.4. scalar quantity
5.5. measured in Joules (J)
5.6. Work-Kinetic Energy Theorem
5.6.1. the net work done by a net force acting on an object is equal the the change in the kinetic energy of the object
5.6.2. .
6. Power
6.1. the rate of doing work
6.2. the rate of transferring energy
6.3. .
6.4. measured in Watts (W)
7. Energy
7.1. the ability to do work
7.2. Types
7.2.1. Kinetic Energy
7.2.1.1. .
7.2.1.2. energy of motion
7.2.2. Potential Energy
7.2.2.1. Gravitational PE
7.2.2.2. Elastic PE
7.2.2.3. stored energy based on an object's position
7.2.3. Mechanical Energy
7.2.3.1. sum of an object’s potential (all forms) and kinetic energy
7.2.3.2. PE + KE = ME
7.2.4. Thermal Energy
7.2.4.1. the energy contained within a system that is responsible for its temperature
7.2.4.2. Heat is the transfer of thermal energy
7.2.4.3. Generated from friction