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# McC 8 Physics

Motion change in position
Force a push or pull with a size and direction
Acceleration when an object speeds up, slows down, or turns.
Inertia measures the tendency of an object to remain at rest or keep moving.
Newton's 1st Law object remains at rest or moves in a straight line with constant speed unless a force acts on it
Newton's 2nd Law an object acted on by an unbalanced force will accelerate in the direction on the force
Newton's 3rd Law forces always act in equal but opposite pairs
Balanced Forces forces are equal but in opposite directions, canceling each other out
Unbalanced Forces When one force is greater than another, a change in motion (acceleration) will result.
Weight the force of gravity on an object; weight = mass X 9.8 m/s2 (acceleration due to gravity)
Acceleration due to gravity 9.8 m/s2
Contact Forces involves objects touching each other
Long Range or Non Contact Forces forces that occur at a distance (grvity, magnetism, electricity)
Distance entire path an object travels
Displacement distance and direction between starting and stopping positions
Speed distance traveled divided by the time needed to travel the distance or s = d/t
Relative Motion an object's position change as described in terms of a reference point
Constant Speed speed is the same at any given moment in time
Instantaneous Speed speed at a particular instant in time
Friction a force that resists motion
Velocity displacement over a given time. (Speed with direction)per unit of time.
Mass how much matter is in an object
Created by: MCJH