Quick question: If a car speed increases, does its weight increase or decrease?

AI Thread Summary
An increase in a car's speed does not change its weight in terms of rest mass, which remains constant regardless of velocity. However, some argue that relativistic mass increases with speed, suggesting a connection between speed and perceived weight. The discussion also touches on the combustion of gasoline, which can affect the car's overall mass as fuel is consumed. The submarine paradox is mentioned as a potential point of confusion regarding mass and buoyancy. Overall, the relationship between speed and weight is complex and involves considerations of both physics and the specifics of the vehicle's operation.
wajed
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why? why not?
 
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Yes, because weight is related to relativistic mass, not rest mass? But I should really brush up on the submarine paradox before committing too strongly..
 
Yes, because gasoline is burnt and vented as exhaust. Unless it's not your normal car...
 
wajed said:
why? why not?

You must show your own work in order for us to help you on homework/coursework questions. What are your thoughts on why or why not?
 
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