Question

Since there is no friction in space why dont we achieve unlimited speed by accelerating

Answer 1

Answer:

Explanation:

Even in the absence of friction, you can't. This is due to:

You would not be able to get enough energy to accelerate subluminal objects to the speed of light.

Your mass would become infinite.

Before we try to understand your hypothetical situation, we first have to take the energy and mass in special relativity such as the relativistic energy momentum equation into account. We also have to assume that you have a source of energy that allows you to constantly accelerate, not just stay at a constant speed.

In conclusion, due to the two factors I have stated above, a subluminal object, even if it may have a energy source, would be unable to accelerate to the speed of light given the conditions of special relativity.