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# IGHS Winkels

### Physical Science Chapter 3

TermDefinition
Friction force that opposes motion between two surfaces that are touching each other
Static friction friction between two surfaces that are not moving past each other
Sliding friction force that opposes the motion of two surfaces sliding past each other
Rolling friction friction between a rolling object and the surface it rolls on
Air resistance acts on objects that fall through air
Terminal velocity the highest velocity that a falling object will reach
Weight force of gravity applied to a mass
Centripetal Force force directed toward the center of the circle for an object moving in a circular motion
Momentum property or tendency of a moving object to continue moving
Acceleration m/s/s
Mass kg
Force N
Weight N
Momentum N/s
Velocity or Speed m/s
Newton's Second Law of Motion For any object, the greater the force that's applied to it, the greater its acceleration will be.
Law of Gravity Any two masses exert an attractive force on each other
Four Basic Forces in Nature Gravity The strong nuclear force Electromagnetic Force The weak nuclear force
Newton's Third Law of Motion To every action force there is an equal and opposite reaction force.
Law of Conservation of Momentum Momentum can be transferred between objects. Momentum is not lost or gained in transfer.
Created by: Winkels