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Cards In This Set
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Average speed
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Distance divided by time
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In order to determine speed, you must know;
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Time and distance
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What is the speed of an object at rest?
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0 mph
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What is one major difference between speed and velocity?
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Velocity includes direction
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Which one doesn't indicate velocity?a. 14 m/sb. 40 km/hc. 80 km/hd. 28 km
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D, because it does not say how many km per HOUR.
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Define acceleration
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Change in velocity divided by the time
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What's the SI unit of acceleration?
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M/s 2
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On a velocity/time graph, a line with a negative slope indicates that the object is
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Slowing down/decreasing speed
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When an object covers equal distances in equal amounts of time, it is moving at a ______ speed.
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Constant
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Velocity describes both
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Speed and direction
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If an object traveling in one direction has a positive velocity, what kind of velocity would the same object traveling in the opposite direction have?
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Negative
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Define acceleration
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A rate of change in velocity
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Explain the similarities and differences between velocity and acceleration
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Velocity is a change in position over time,acceleration is a change in velocity over time.similarities- they both rate changes.
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Explain why a cyclist accelerates when turning a corner even if her speed doesn't change.
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Her direction is changing
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What is one thing you need to remember for this test?!
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The speed triangle.
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