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.
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

Motion and Force


Motion An object's change in position relative to a reference point
Reference point The object that appears to stay in place
Speed the distance traveled divided by the time interval during which the motion occured
Velocity the speed of an object in a particular direction
Acceleration the rate at which velocity changes over time; and abject accelerates if its speed, direction, or both change
Force A push or a pull exerted on an object in order to change the motion of the object ; force has size and direction
newton(N) The SI unit for force (symbol, N)
Net Force The combination of all of the forces acting on a object
Balanced forces Will not cause a change in the motion of a moving object
Unbalanced forces Produce a change in motion, such as a change in speed or a change in direction
Energy Ability to work and move
Kinetic energy Is energy in moving objects or mass.Some examples are mechanical energy and electrical energy
Potential energy Is any form of energy that has stored potential that can be put into future use
How do I know when something is moving?
Energy Transformation Energy transformation is the process of changing energy from one form into another. In physics, energy is a quantity that provides the capacity to perform work.



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