Which describes einstein’s second postulate about the special theory of relativity? 1. the speed of light in a vacuum is constant, and nothing is faster than the speed of light. 2. the speed of light in a vacuum is constant, and some things are faster than the speed of light. 3. the speed of light in a vacuum fluctuates, but nothing is faster than the speed of light. 4. the speed of light in a vacuum fluctuates, and some things are faster than the speed of light.

The speed of light in a vacuum is constant, and nothing is faster than the speed of light.

Explanation:

Albert Einstein has given two laws about the special theory of relativity. The second postulate of Einstein illustrates that the the speed of light in a vacuum is constant. There is nothing that is faster that the speed of light.

The value of the speed of the light is .

So, the correct option is (a) "The speed of light in a vacuum is constant, and nothing is faster than the speed of light".

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )