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9 Cards in this Set
- Front
- Back
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What is Speed?
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How fast something moves; the distance traveled per unit of time
(m/s, km/h, mi/h are units of speed) |
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What is Velocity?
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The speed of an object AND a specification of its direction of motion
(m/s, km/h, mi/h are units of velocity) |
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Vector quantity
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Magnitude AND direction
(How much and which way) |
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Scalar quantity
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Only magnitude
(How much) |
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Acceleration
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The rate of which velocity changes with time; the change in velocity may be in magnitude, or direction, or both
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What is Free Fall?
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Motion under the influence of gravity only (air resistance is ignored)
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What is Instantaneous Speed?
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The motion of how fast an object is traveling at any moment in time.
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What is Average Speed?
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The total distance divided by time interval
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What is Constant Velocity?
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An object maintains its speed and direction
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