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

Force and Motion

Force A push or a pull; affects the object's motion; start, stop, speed up or slow down.
Motion A change in position of an object caused by force.
Speed Rate of motion or progress; determined by time and distance.
Balanced Forces When two forces on an object are completely equal; cause no change in motion
Unbalanced Forces When one force on an object is stronger than the other; change in motion occurs.
Friction A force when two objects rub together; slows motion.
Air Resistance Friction in the air
Gravity A force that pulls objects to the Earth
Inertia Tendency for an object to remain in motion or to remain at rest until a force acts upon it.
Mass The amount of matter that makes up an object.
Direction Course or path that an object moves (north, south, east, west, left, right, up, down, across).
Position An object's location in relation to another object (across, below, beside, behind, ahead of).
Lubricant Material used to reduce friction
Acceleration An increase in speed
Torque A force that causes an object to rotate
Created by: Soccerdogs