# Physics Quicksheets - Work, Energy, & Momentum

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 Author: awc1990 ID: 227418 Filename: Physics Quicksheets - Work, Energy, & Momentum Updated: 2013-07-17 13:55:25 Tags: Physics Quicksheets Work Energy Momentum Folders: Description: Kaplan Quicksheets Chapter 3 Show Answers:

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1. Kinetic Energy:
Kinetic Energy: the energy associated with moving objects. It is given by:

2. Total Mechanic Energy:

Mechanical energy is conserved when the sum of kinetic and potential energies remains constant.
3. Work-Energy Theorem:
Relates the work performed by all forces acting on a body in a particular time interval to the change in kinetic energy at that time:

The expression is

4. Conservation of Energy:
When there are no nonconservative forces (e.g. friction) acting on a system, the total mechanical energy remains constant:

5. Momentum:
A vector quantity. It is given by:

p = mv
6. Elastic Collisions:

Target at rest...

Conservation of Momentum:

Conservation of Kinetic Energy:

7. Completely Inelastic Collisions:

Target at rest...

Conservation of Momentum:

• Kinetic Energy:

Before:    After:

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