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

Physics - Forces

Friction Definition The contact force that acts to oppose sliding motion between surfaces
Friction symbol Ff
Friction Direction Parallel to the surface and opposite the direction of sliding
Normal Symbol Fn
Normal Definition The contact force exerted by a surface on an object
Normal Direction Perpendicular to and away from the surface
Spring Symbol Fsp
Spring Direction Opposite the displacement of the object at the end of the spring
Spring Definition A restoring force, that is, the push or pull a spring exerts on an object
Tension Symbol FT
Tension Direction Away from the object and parallel to the string, rope, or cable point of attachment
Tension Definition The pull exerted by a string, rope, or cable when attached to a body and pulled taut
Thrust Symbol Fthrust
Thrust Definition A general term for the forces that move objects such as rockets, planes, cars, and people
Thrust Direction In the same direction as the acceleration of the object barring any resistive forces
Weight Symbol Fg
Weight Direction Straight down toward the center of the Earth
Weight Definition A long-range force due to gravitational attraction between two objects, generally Earth and an object
Created by: buffy3994