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22 Cards in this Set
- Front
- Back
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Force
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is a push or a pull
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Newton
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the streangth of aforce is measured in SI unit
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Net Force
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The combination of all forces acting on an object
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Unbalanced Forces
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can cause an object to start moving stop moving of change direction
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Balanced Forces
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equl forces acting on one in opposite directions
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Friction
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the force that 2 surfaces eexert on each other when they rub
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Static Friction
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Static friction is friction between two or more solid objects that are not moving relative to each other
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Sliding Friction
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refers to the resistance created by two objectssliding against each other
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Rolling Friction
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is the resistive force that slows down the motion of a rolling ball or wheel.
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Fluid Friction
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is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
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Gravity
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the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
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Mass
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coherent, typically large body of matter with no definite shape.
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Weight
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a body's relative mass or the quantity of matter contained by it
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Free Fall
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downward movement under the force of gravity only
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Air Resistance
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is the frictional force air exerts against a moving object. As an object moves, air resistance slows it down.
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Terminal Velocity
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the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
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Projectile
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a missile designed to be fired from a rocket or gun.
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Inertia
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a tendency to do nothing or to remain unchanged.
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Momentum
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the quantity of motion of a moving body, measured as a product of its mass and velocity.
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Law of Conservation of Momentum
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states that in the absence of outside forces the total momonetium of objects that interact does not charge
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Satellite
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is any object that orbits another object in space
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Centripetal Force
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any force that causes an obect to move in circular path
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