Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Work Power Machines

questions on work power and machines

What is work? Work is whats done when a force causes an object to move in the direction of the force
How is work calculated? Work = amount of force X distance the object moved
What is power? Power is how quick energy converts to another object
How is power calculated? Power = Work divided by Time
What is a machine? Something that makes work easier
What is work input? The work you do on a machine
What is work output? The work done by a machine
What is mechanical advantage? How much force the machine increases
What is mechanical efficiency? It compares a machines work input to its work output