Shared Flashcard Set

Details

Force, Motion and Acceleration
Flash cards for Force, Motion and Acceleration
27
Science
8th Grade
11/17/2010

Additional Science Flashcards

 


 

Cards

Term
What is constant speed?
Definition
A speed that does not vary, it always stays the same (it's like having cruise control on in a car)
Term
What is Horizontal Motion
Definition
Motion parallel to the earth.  It's like a hockey puck moving along the ice.
Term
What is the law of conservation of momentum?
Definition
The total amount of momentum of a group of objects does not change unless outside forces act on the object.
Term
What is the equation we use for Force?
Definition
Force = Mass x Acceleration
Term
What is Air Resistance?
Definition
The force air exerts on moving objects
Term
What is the acceleration equation?
Definition
Acceleration = (Final velocity- initial velocity)/Time
Term
What is inertia?
Definition
A tendency of an object to resist any change in motion
Term
What is vertical motion?
Definition
Motion perpendicular the the earth's surface (Up and down motion)
Term
What is velocity?
Definition
A measure that describes speed and direction
Term
What is momentum?
Definition
A property a moving object has due to its mass and velocity
Term
What is average speed?
Definition
Distance traveled divided by the time traveled
Term
Newton's 1st law
Definition
(The law of Inertia) An object moving at a constant velocity keeps moving at that velocity unless a net force acts on it
Term
What is net force?
Definition
An unbalanced force.  When there is more force pushing in one direction than another.
Term
What is weight?
Definition
The measure of the force of gravity on an object
Term
Balanced force
Definition
When two forces of equal size push in opposite directions.
Term
Newton's 3rd law
Definition
When one object exerts a force on a second object, the second one exerts on the first that is equal in size and opposite in direction
Term
What is terminal velocity?
Definition
The highest velocity that can be reached by a falling object.
Term
Weight equation
Definition
Weight = mass x acceleration (due to gravity)
Term
Instantaneous speed
Definition
How fast we are going at a specific time.  Like a photo finish in horse races. 
Term
Newton's second law
Definition
A net force on an object causes the object to move in the direction of the force
Term
What is Speed?
Definition
The rate of change of position.  How fast we move from one place to another.
Term
What is gravity?
Definition
The force that every object in the universe exerts on each other
Term
Centripetal acceleration
Definition
Acceleration toward the center of a curved or circular path.
Term
Momentum equation
Definition
Momentum (P) = Mass x Velocity
Term
What is a projectile?
Definition
Anything that is shot or thrown through the air. 
Term
What is force?
Definition
A push or a pull one body exerts on another. 
Term
What is acceleration?
Definition
How quickly something speeds up, or slows down. 
Supporting users have an ad free experience!