I Question on the energy needed to go at a relativistic speed

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In the discussion about the energy required to accelerate an object approaching relativistic speeds, the main point is that as an object's speed (v) approaches the speed of light (c), its relativistic mass (M) increases, leading to a requirement for increasingly greater energy to continue accelerating. The original poster questions whether less energy is needed for further acceleration as v approaches c, but responses clarify that the kinetic energy required actually tends to infinity as v approaches c. The conversation highlights the importance of understanding relativistic mass versus rest mass and emphasizes that the energy needed to increase speed does not decrease, contradicting the poster's conclusion. Ultimately, the consensus is that more energy is always required to achieve additional speed increases as one approaches relativistic velocities.
  • #31
John SpaceY said:
I understand the current relativistic theory but I don't like the consequences for people on Earth and also for people inside the spacecraft ...
The universe does not care if you like the way it works and we don't have the power to change the laws of the universe to something we like better. The origional question was adequately answered, so this thread is locked.
 
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