Special relativity is a theory in physics that describes how the laws of physics apply in reference frames that are moving at a constant speed relative to each other. It was developed by Albert Einstein in the early 20th century.
According to special relativity, force is not a fundamental concept but rather a combination of mass and acceleration. This means that the force acting on an object will be different depending on the observer's reference frame.
Yes, special relativity can explain how objects behave when they are moving at speeds close to the speed of light. It predicts that time and space will appear to be distorted for an observer in a different reference frame.
In special relativity, inertia is not a property of an object but rather a result of its interaction with other objects. This means that an object's inertia will change depending on its speed and the observer's reference frame.
Special relativity has many practical applications, including GPS technology, particle accelerators, and nuclear power plants. It also helps explain phenomena such as time dilation and length contraction, which have been confirmed through experiments.