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30 Cards in this Set
- Front
- Back
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Acceleration |
measure of the change in velocity during period of time |
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Average Speed |
total distance traveled divided by the total time taken to travel that distance |
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Balanced Force |
forces acting on an object that combine and form a net force of zero |
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Centripetal Force |
circular motion, a force that acts perpendicular to the direction of motion, toward the center of the curve |
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Circular Motion |
any motion in which an object is moving along a curved path |
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Constant Speed |
the rate of change of position in which the same distance is traveled each second |
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Contact Force |
a push or a pull on one object by another object that is touching it |
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Displacement |
difference between the initial, or starting, position of an object that has moved |
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Force |
push or a pull on an object |
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Force Pair |
forces two objects apply to each other |
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Friction |
contact force that resists the sliding motion of two surfaces that are touching |
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Gravity |
attractive force that exists between all objects that have mass |
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Inertia |
tendency of an object to resists instant in time |
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Instantaneous Speed |
an object's speed at a specific instant in time |
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Kinetic Friction |
the friction arising between bodies in motion with respect to each other, as a body sliding along a floor |
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Magnitude |
the great size or extent of something |
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Mass |
the amount of matter in an object |
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Momentum |
a measure of how hard it is to stop a moving object |
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Motion |
the process of changing position |
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Net Force |
the combination of all the forces acting on an object |
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Newton's First Law of Motion |
law that states that if the net force acting on an object is zero, the motion of the object does not change |
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Newton's Second Law of Motion |
law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object's mass |
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Newton's Third Law of Motion |
law that states that for every action there is an equal and opposite reaction |
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Noncontact Force |
a force that one object applies to another object without touching it |
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Position |
an object's distance and direction from a reference point |
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Reference Point |
the starting point you use to describe the motion or the position of an object |
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Speed |
the distance an object moves divided by the time it takes to move that distance |
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Unbalanced Force |
forces acting on an object that combine and form a net force that is not zero |
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Velocity |
the speed and the direction of a moving object |
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Weight |
the gravitational force exerted on an object |
