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

Unit 2 Energy


Work The use of force to move an object some distance in the direction of the force.
Energy The ability to do work.
Power The rate at which work is done.
Kinetic Energy The energy of motion.
Potential Energy The energy an object has because of its position, condition, or chemical composition.
Mechanical Energy The energy possessed by an object due to its motion and position.
Machine Any device that helps people do work by changing the way work is done.
Mechanical Advantage The number of times the machine multiplies the input force.
Mechanical Efficiency A comparison of a machine's work output with the work input.
Lever A simple machine that has a bar that pivots at a fixed point.
Fulcrum The fixed point that is included in a lever.
Wheel and Axle A simple machine that is make of a wheel connected to a smaller cylindrical object, the axle.
Pulley A simple machine that has a grooved wheel that holds a rope or a cable.
Inclined Plane A simple machine that is a straight, slanted surface.
Created by: k.schischkin