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

PS ch2


distance how far an object moves
displacement distance and direction of an object's change in position from the starting point
speed distance an object travels per unit of time
average speed total distance an object travels divided by the total time it takes to travel that distance
instantaneous speed speed of an object at a given point in time; is constant for an object moving with constant speed, and changes with time for any object aht is slowing down or speeding up
velocity the speed and direction of a moving object
acceleration is the rate of change of velocity
force push or pull
net force when two or more forces act on an object at the same time, the forces combine to form net force
balanced force forces on an object that are equal in size and opposite in direction
inertia the tendency of an object to resist any change in its motion
unbalanced force forces that cause a change in motion of an object
Created by: merariramos1