Work:
The work, W, done by a constant force on an object is defined as the product of the component of the force along the direction of displacement and the magnitude of the displacement.

Calculation of Work:
When calculating work, only the force that is applied in the direction of motion is considered.  W=Fdcosθ

Postive Work:
If the force and displacement are in the same direction, that would be considered positive work.

Power:
Power is a measure of how quickly work is done.

Kinetic Energy:
Kinetic energy is energy of motion.  All moving object possess kinetic energy.

Gravitational Potential Energy:
Gravitational Potential energy is the energy an object possessed due to its position.

Base Level:
The point that height is measured from.  Any point can be used as a base level because the energy amount you calculate will be relative.

Conservation of Energy:
Energy cannot be created or destroyed; it may be transformed from one form into another, but the total amount of energy never changes.

This tutorial will show you how to calculate work.  Additionally, if the time taken to complete this work is known, the power generated can be found too.  Work is related to energy.  In fact, work is defined as the change in energy.  This is the work energy theorem.  This energy can come in many forms. Two of the main types of mechanical energy are kinetic and potential.  Kinetic energy is energy of motion, while potential energy is stored energy.  In many situations, conservation of energy can be applied to help solve problems.  This says that energy isn’t created or destroyed, just transferred from one type to another.

Specific Tutorial Features:

• Problem-solving techniques are used to work out and illustrate the example problems, step by step.
  
• Easy explanation for sometimes confusing physics formulas.
  
• Animation showing conservation of energy by a skydiver.

Series Features:

• Concept map showing inter-connections of new concepts in this tutorial and those previously introduced.
  
• Definition slides introduce terms as they are needed.
  
• Visual representation of concepts
  
• Animated examples—worked out step by step
  
• A concise summary is given at the conclusion of the tutorial.

Work

• Direction of force
  
• Sign conventions

Power

• Calculation of power

Energy

• Kinetic energy
  
• Potential energy
  
• Work energy theorem
  
• Conservation of energy