Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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 Lessons 1-3

Work Energy Machines

Work the use of force to move an object and move it
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
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
Wheel and Axle a simple machine that is made 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: 18rliu1008
Popular Physics sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards