Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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
Know
remaining cards
Save
0:01
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:
Retries:
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

GED Physical Science

Lesson 5 Motion and Forces

TermDefinition
speed the rate at which an object moves
velocity an object's speed in a particular direction
acceleration the rate at which velocity changes
force anything that tends to change the state of rest or motion of an object (pushing/pulling/gravity/friction, etc)
laws of motion three laws by which the planets and all other objects move when acted upon by a force (set down by Sir Isaac Newton, an English physicist and mathematician)
law of inertia Newton's first law of motion states that an object at rest will stay at rest until a force acts upon it, and an object in motion will stay in motion at a constant speed in a straight line until a force acts upon it
momentum related to the amount of energy that a moving object has, and it depends on the mass of the object and its velocity (all forces exist in pairs, and all forces are interactions between objects)
law of motion (or acceleration) Newton's second law states that the acceleration of an object depends on its mass and the force acting upon it; the greater the force, the greater the acceleration; the more massive the object, the more force it takes to accelerate it
Newton's 3rd law states that for every action, there is an equal and opposite reaction; this was used to derive the law of conservation of momentum
Created by: jpiittmann