Time, place and examination contents of Shenyang Putonghua Level 1 and Level 2 registration.

The motion formula of high-speed motion needs Lorentz transformation. You can refer to the corresponding formula. The limit value of Lorentz transformation is the speed of light, so it cannot exceed the speed of light. You can't keep accelerating, because the higher the speed, the more energy you need. Theoretically, an object with non-zero mass cannot be accelerated to the speed of light by the energy provided by the force of tilting the universe.

According to the time dilation effect, the faster the moving speed, the slower the relative time of observing the coordinate system. Therefore, if an object can move at the speed of light, in the observer's view, time is stationary relative to the moving object.

Relativity is divided into special relativity and general relativity. The basic theories include: the constant speed of light in vacuum, the time expansion of moving objects, gravitational lens, the equivalence between acceleration and gravitational space curvature, and so on. The so-called theory of relativity actually only cancels the absolute coordinate system of Newton's motion system.