See, it is not possible to produce a velocity equal to the speed of the light c and not more than that also.There is an assumption taken that a body moving with a velocity less than the light its physical properties do exist or are there but when it exceeds the speed of light it gets converted completely to the energy.And its a fundamental law that every body tries to be in its initial position and it resists to have a change in its state and properties.So if an object travels equals to the speed of the light it will converted to the light energy and no body will be willing to get converted to the small photons or the light energy as it does'nt wants to lose its properties.this is mine assumption.! Which i have concluded by my reasoning.
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