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Physical Science Force and Motion
Force and Motion test notes
21
Science
8th Grade
02/23/2012

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Cards

Term
Rate at which an object moves.
Definition
Speed
Term
distance/time
Definition
Formula for Speed.
Term
Speed of an object in a specific direction.
Definition
Velocity
Term
distance/time } direction
Definition
Formula for velocity
Term
Change in an objects velocity over time.  
Definition
Acceleration.
Term
velocityfinal  - velocityinitial / time
Definition
Acceleration Formula
Term
Final point at which velocity is measured.
Definition
Final Velocity.
Term
Beggining point at which velocity is measured.
Definition
Initial Velcoity
Term
Acceleration in which the velocity decreases.
Definition
Negative Acceleration OR Deceleration.
Term
A push or pull. Is measure in Newtons(N). Size and Direction.
Definition
Force.
Term
Occurs when the total of all the forces (net force) equals zero.
Definition
Balanced Force.
Term
Total Force.
Definition
Net Force.
Term
Unbalanced. A Force that opposes motion between the two surfaces that are touching. It affects the motion and reduces speed. Always causes heat. It depends on texture, weight, and force.
Definition
Friction.
Term
Occurs when the net force of an object doesn't equal zero.
Definition
Unbalanced force.
Term
Unbalanced. A force of attraction between objects due to their masses. It depends on the mass and the distance.
Definition
Gravity.
Term
Amount of matter an object has.
Definition
Mass.
Term
An object at rest or motion will stay in/at rest or motion unless acted upon by and unbalanced force.
Definition
1st law of motion.
Term
Tendency for all abjects to resist any change in motion. An object with more mass has more of this. Harder to stop a larger mass than a smaller mass object.
Definition
Inertia.
Term
An object with a smaller mass will accelerate more than if the smae force is exerted on a larger object. This is related to inertia.
Definition
2nd law of motion.
Term
An object with a smaller mass will accelerate more than if the same force is exerted on a larger oibject.
Definition
3rd law of motion.
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