Unit 2 Work, Energy and Machines

15 terms by wileyb 

Create a new folder

Advertisement Upgrade to remove ads

work

The use of force to move an object some distance in the direction of the force.

equation for work

W = F x d
work = force x distance

energy

is the ability to do work

power

is the rate at which work is done

equation for power

P = E/ t
power = energy divided by time

joule

standard unit of measurement for both work and energy

watt

is the standard unit of measurement for power

potential energy

is the energy an object has because of its position, condition or chemical composition

kinetic energy

is the energy of motion

equation for kinetic energy

KE = 1/2mv2
kinetic energy = 1/2 mass x velocity squared

elastic potential energy

is stored in a stretched spring or rubber band

chemical potential energy

a substance stores energy as a result of its chemical bonds

gravitational potential energy

is due to its position above the ground

machine

any device that helps people do work

six types of simple machines

levers, wheels and axles, pulleys, inclined planes, wedges and screws

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set