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22 Cards in this Set
- Front
- Back
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_________ is a measure of the change in velocity during a period of time |
acceleration |
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an object accelerates when its velocity changes as a result of increasing speed, decreasing speed or a change of _______ |
direction |
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like velocity, acceleration has a direction and can be represented by a ___________ |
arrow |
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an acceleration arrow's direction depends on whether the __________ increases or decreases |
velocity |
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when the velocity of an object is increasing, the acceleration arrow points in the ________ direction as the velocity arrows |
same |
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when the velocity of an object is decreasing, the acceleration arrow points in the ________ direction as the velocity arrows |
opposite |
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when an object changes direction, the acceleration arrows point to the __________ of the curve along which the object is moving |
inside |
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_________ is a change in velocity during a time interval divided by the time interval during which the velocity changes |
acceleration |
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if SI units are used in the acceleration equation, then acceleration has units of ___________ |
meters per second |
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if acceleration is negative, then it is _______ the direction of motion |
opposite |
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a ________ can be used to show how speed changes over time |
speed time graph |
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a speed time graph has _____ plotted on the horizontal axis, which is the x axis. |
time |
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__________ is plotted on the vertical asix, which is the y axis |
speed |
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the speed time graph for an object at _____ is a horizontal line at y=o |
rest |
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if an object is moving ___________ speed, its speed time graph is a horizontal line above the x axis |
constant |
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the speed time graph for an object that is speeding up is a line that slants ______ toward the right side of the graph |
up |
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if an object is slowing down, its speed time graph is a line that slants ________ toward the right side of the graph |
down |
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speed time graphs do not show what happens when velocity changes as the result of a change of __________ |
direction |
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_________ can be described by one's direction and distance from a reference point |
position |
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distance and displacement can be compared to find one's average ________ |
speed |
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speed and direction describe one's ________ |
velocity |
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if one velocity is ______ that person is accelaration |
changing |
