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velocity time graph4.notebook 1 March 13, 2019 Mar 1212:09 PM Velocity Time Graphs Changes in velocity over time are called acceleration
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Velocity TimeGraphsChanges in velocity over time are called acceleration
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Direction of acceleration is determined by the CHANGE invelocity, not by the direction an object happens to be moving.Example:Youstart from rest and reach a final velocity of 18 m/s [East] in4.5 seconds
Example:Youstart with a velocity of 35 m/s [East] and finish with a
velocity of 10 m/s [East] in 2.8 seconds.
What is the acceleration ?
What is the acceleration ?
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When the van is speeding up, the average velocity vectors and the average acceleration vector point in the same direction (+). When the van is travelling at a constant speed, the average acceleration is zero.
When the van is slowing down, the average velocity vectors (+) and the
average acceleration vector (−) are in opposite directions
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The slope in a velocity time graph is the acceleration
the area under a velocity time graph can give us distance and displacement
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