Question

what will happen if we throw some things with speed of light​

Answer 1

It will return with the double speed that of the light towards the earth due to the gravitational force of earth.

Answer 2

If an object travels at the speed of light, its mass will increase exponentially! Consider this… the speed of light is 300,000 kilometers per second (186,000 miles per second) and when an object moves at this speed, its mass will become infinite. Therefore, infinite energy will be required to move the object, which is impractical.

That’s the reason why no object can move at the speed or faster than the speed of light.

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