|MadSci Network: Physics|
Suppose you had a 1 kg object and managed to accelerate it to the point where it gained 100 kg in relativistic mass. At this point, a braking force is applied until the object is stopped relative to the observer. Assuming both the acceleration and braking process didn't require onboard fuel (let's assume that all energy consumption was from outside sources that drove the acceleration/deacceleration) would the object at rest have a mass of 1 kg or 100 kg when brought back to rest? If 1 kg, what happened to the relativistic mass?
Re: What would happen to relativistic mass if slowed down?
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