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One of the most amusing things a person can experience is when a car in neutral appears to go uphill when its brakes are released. Can this really happen or is it an optical illusion? How can you verify if a road is pitched uphill or downhill?

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kelvinskell

Answer: it is an optical illusion.

Explanation: A car cannot go uphill when its brakes are released so far as the engine is not running as this would negate the first law of thermodynamics and also gravity.

You can verify whether a road is pitched uphill or downhill by using a level meter.

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