Can you conclude that a car is not accelerating if its speedometer indicates a steady 60 km/h? Explain
To Determine:
Whether a car with a steady speed isaccelerating or not.
Solution:
It could be accelerating even though the speedometer shows a steady speed.
Explanation:
Acceleration is the change of the velocity in a period of time. This change includes both characteristics of a vector: magnitude and direction. If a car changes its direction at steady speed, it would be accelerating because direction could be changing.
The speedometer indicates only the magnitude of the velocity i.e. the speed of the car. The direction is not indicated. Therefore, it cannot be concluded that car is accelerating or not by just the reading of the speedometer.
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