Question

Why an object can't move faster then speed of light?

Answer 1

An object can't move faster than Speed of light because particles that have mass require energy to accelerate them. The closer to the speed of light you get a particle, the more energy is required to go faster. This is because the particles themselves get more massive in proportion to the increased velocity.

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Answer 2

the thing having mass needed more energy to accelerate but light has no weight that is why any object cannot move faster than speed of light