Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Your email address is only used to allow you to reset your password. See 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

Science Uit 1-3

Reference Point a place or object used for comparison to determine if something is in motion
Frame of Reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one another.
Displacement the direct, change in position of an object
Speed the distance an object travels per unit of time
Velocity The speed and direction of an object!
Momentum Product of an object’s mass and velocity
Acceleration the rate of change of velocity
Force a push or pull on something anything that changes something’s acceleration.
Friction anything that changes something’s acceleration.
Weight The gravitational force exerted on an object is the object’s weight
Newtons First Law An object moves at a constant velocity unless an unbalanced force acts upon it.
Newtons Second Law The motion of an object changes only if an unbalanced force acts on the object
Newtons Third Law When one object exerts a force on a second object, the second object exerts a force on the first that is equal in strength and opposite in direction.
Work force applied through a distance
Efficiency the ratio of output to input work. It is measured as a percent
Mechanical Advantage the ratio of output force to input force The effectiveness of a machine
Energy The ability to cause change! limits what can happen in any system
Power rate at which energy is converted
Unit of Distance Meters
Unit of Time Seconds
Unit of Speed meters/second
Unit of Momentum kg*m/s
Unit of Acceleration Meters/Second Squared
Unit of Weight Fg
Unit of Force Newtons
Unit of Work Joules
Unit of KE/PE Joules
Unit of Efficiency Percent
Unit of Mechanical Advantage N/A???
Unit of Power Watts
Unit of Calories Joules 4000=1J
Unit of Mass kg
Equation for Displacement Direction+Direction, Direction-Direction, Pythagorean theorem
Equation for Speed Distance * Time
Equation for Momentum p=mv
Equation for Force F=ma
Equation for Weight W=mg
Equation for Work W=Fd
Equation for Power W p=----- t
Created by: kcross26
Popular Physical Science sets




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