## What is a Pentagon Shape?

The Pentagon is a polygonal figure that has five sides. It is the second simplest polygonal figure after the square. The Pentagon has a long history in geometry and has been used in art and architecture for centuries. In mathematics, the Pentagon is used as an example of a regular polygon with an odd number … Read more

## Mechanical Energy Formula: Definitions & Examples

The act of dislocating an object when a force acts upon it is said to produce work. Work involves a force through which an object can be displaced. When the work is completed, the thing will gain energy. The energy acquired by an object on which work is done is known as its mechanical energy. … Read more

## Average Acceleration Formula – Definition & Examples

There is no doubt that you are very familiar with the term average acceleration, especially in relation to cars. We say something is accelerating when it changes velocity. Acceleration is the rate at which velocity changes over time. In laymanâ€™s terms, we use acceleration to describe a state of increasing speed. As with velocity, there … Read more

## Normal Force Formula: Definition and Examples

The normal force, also known as the normal reaction force, is a contact force. A normal force cannot be exerted on two surfaces that are not connected to one another. Consider a table and a container; when they are not in contact, they cannot exert normal force on one another. When two objects come into … Read more