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

[wajed]

why? why not?

[cesiumfrog]

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..

[Nimish]

Yes, because gasoline is burnt and vented as exhaust. Unless it's not your normal car...

[berkeman]

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?