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

unit terms and definitions

Motion an object is in motion when its distance from another object is changing
Reference Point a place or object for comparison to determine if something is in motion
Instantaneous Speed the rate at which an object is moving at that point in time
Velocity speed of an object in a given direction
Line Graph used to show motion of objects
Slope the steepness of the line
Acceleration the rate at which velocity changes (refers to increasing, decreasing, or constant/changing speed)
Force a push or a pull
Newton the SI units used for force
Net Force all of the forces acting on an object at one time
Unbalanced Forces can cause an object to start, stop, or change direction
Balanced Forces equal forces acting in opposite directions
Friction the force that two forces exert on each other when they rub together
Static Friction friction that acts on objects that are not moving
Sliding Friction occurs when 2 solid surfaces slide over each other
Rolling Friction when an object roll over a surface
Fluid Friction when a solid object moves through a fluid
Gavity a force that pulls objects towards each other
Free Fall when an object falls the only force acting is gravity-unbalanced force causes acceleration
Terminal Velocity the greatest velocity a falling object reaches
Newton's 1st Law an object at rest will remain at rest, an object moving at constant velocity will continue moving at a constant velocity UNLESS it is acted upon by an unbalanced force
Inetria the tendency of an object at rest to resist a change in motion
Newton's 2nd Law acceleration depends on an objects mass and on the net force acting on an object
Newton's 3rd Law if one object exerts a force on another object then the second object exerts a force of equal strength in the opposite direction
Paired Forces for every action there is an equal and opposite reaction
Momentum the momentum of a moving object can be determined by multiplying its mass * its velocity
Law of Conservation of Momentum the total momentum of any group of objects remains the same(is conserved), unless outside forces act on an object
Centripetal Force a force that cause an object to move in a circular path, the faster an object is moving the farther it travels before it hits the ground
Created by: owlbewise13