Question

Differentiate between relative and absolute acceleration measurement

Answer 1

So I was studying special relativity and came across the twin paradox. When I searched for the explanation for it I saw that the person going on the spaceship accelerates with respect to earth and so the the direction of time is rotated, so the person on spaceship's clock moves slower and both of them would agree on it. When I asked doesn't the person on earth also accelerate with respect to the person on spaceship I was told that since they both accelerate relative to each other but only the person on spaceship has absolute acceleration.