What is Energy?

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Which has a greater gravitational potential energy? A book lifted 1 meter off the ground or the same book lifted 10 meters off the ground

10 meters because the book weighs the same but it is at a greater elevation

Define elastic potential energy

Energy associated with objects that can be compressed or stretched

What is potential energy?

Energy that results from the position or shape of an object

What is the formula for calculating power?

Energy transferred divided by time

What is energy measured in?

Joules

What are two basic types of energy?

Kinetic and potential energy

Define gravitational potential engery

Potential energy related to an object's height

What happens when you do work on an object?

Some of your energy gets transferred to that object

What factors affect an object's kinetic energy?

Speed and mass

Energy

The ability to do work or cause change

How can we define power as an amount

The amount of energy transferred in a unit of time

Define kinetic energy

The energy an object has due to its motion

What happens to an object's kinetic energy as its speed increases?

The faster the object moves the more kinetic energy it has

What happens to an object's kinetic energy if it's mass increases?

The greater mass it has the more kinetic energy the object has what

What happens when energy is transferred?

The object upon which the work is done gains energy

What is power?

The rate at which work is done

You can think of work as ____

Transfer of energy

How can you calculate an object's gravitational potential energy?

Weight x Height

When is work done?

When a force moves an object

Example of elastic potential energy

When a girl is jumping on a trampoline, the trampoline changes shape and stored energy sends her upward


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