How do you know that a speedometer tells you the instantaneous speed of a car?

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08-04-2015
Physics

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How do you know that a speedometer tells you the instantaneous speed of a car?

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Kaitlyneer Kaitlyneer · Answer 1 · 2015-04-08T12:35:02-04:00

Kaitlyneer Kaitlyneer

08-04-2015

Because the speedometer responds directly and proportionally to acceleration (whether speeding up or breaking). If the speedometer displayed average speed it would not be directly affected by changes in speed due to acceleration

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