Newton's First Law and Perpetual Motion

[njtt]

@am77494

As a followup question Chronos - does it happens instantly ? Or do conservation of energy follows the speed of light. That is if I add 1J energy to a cube of 3x10^8 m through one wall - and measure the energy in the cube - is the energy in the cube instantly increased by 1J ?

You asking whether something is in a box as soon as it is in the box.

The answer is clearly yes, as a simple matter of logic.