Special relativity and Einstein postulates

Question 1

Postulate 1- laws

Answer 1

All the laws of physics remain constant in all inertial frames of reference

Question 2

Postulate 2- speed

Answer 2

Speed of light (in a vacuum) remains constant in all inertial frames

Question 3

Observer of time- special relativity

Answer 3

For a stationary observer, time will appear to dilate for an object moving relative to the observer. (Longer)

Question 4

Observer of length- special relativity

Answer 4

For an observer, length will appear to contract for a object mov8ng relative to the observer (shorter)

Question 5

Evidence for special relativity

Answer 5

Atomic clocks
GPS satellites
Muon decay