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Forces and Motion

Vocabulary 1-30

TermDefinition
Motion A change in position compared to the starting location, which happens over time
Force A push or pull on an object that can move, stop, or change its direction
Friction The force or resistance caused when two things rub together
Unbalanced Force Forces that are unequal and cause motion
Balanced Force Forces that are equal and result in no motion
Contact Force Forces between 2 objects that are touching
Non-contact Force Any force on an object by another object that is not touching it
Weight The pull of gravity on an object
Mass The amount of matter in an object
Energy The ability to cause change in matter
Potential Energy Energy available because of an object’s position
Kinetic Energy Energy an object has because of its movement
Newton's 1st Law An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted on by an outside force
Newton's 2nd Law An object’s acceleration depends on the size, direction of the force, and mass of the object
Newton's 3rd Law For every action, there is an equal and opposite reaction
Inertia The tendency for an object to resist change and do what it is already doing
Momentum A measure of how hard it is to slow down or stop an object
Gravity The force that pulls objects towards the center of the earth
Speed A measurement of an object’s motion during a given time
Equilibrium Equal balance of forces acting on an object
Slope Slant or incline
Drag the force that makes objects slow down or prevents it from moving
Lift the force that lifts an object from the ground
Thrust the force that propels or pushes an object forward
Air Resistance friction between an object trying to move in the air
Aerodynamics the type of dynamics dealing with air and the way it interacts with moving objects
Distance The measurement of the motion of an object
Acceleration A change in speed and or velocity
Velocity Speed with direction
Deceleration Decrease in speed and or velocity
Created by: delyta5
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