Special Relativity basic concepts

Question 0

Reference system

Answer 0

X,y,z system associated with an object

Question 1

Special relativity

Answer 1

Studies inertial systems

Question 2

Inertial reference system

Answer 2

A system that moves with a constant velocity relative to another

Question 3

Non-inertial system

Answer 3

A system that moves with acceleration relative to another

Question 4

General relativity

Answer 4

Studies of non-inertial systems

Question 5

Absolute system

Answer 5

A system at absolute rest. All other systems are compared to it and it does not exist

Question 6

Relative speed

Answer 6

Any speed on an object relative to another object

Question 7

Relativistic speed

Answer 7

Any speed bigger than 0.1 c (c/celerity=3x10^8 m/s). If you move at relativistic speed you experience time dilation, length contraction and mass increase

Question 8

The speed of light

Answer 8

3x10^8 m/s- assumed to be the fastest speed in the universe as well as assumed to remain the same in a vacuum of space

Question 9

1 postulate of relativity

Answer 9

The laws of physics are the same in all inertial systems of reference or
All inertial systems are equal

Question 10

2 postulate oF relativity

Answer 10

Speed of light is constant in a vacuum regardless of the sPeed of the light source or the speed of the observer