Einstein's equivalence principle says that
A)everyone measures the speed of light to be equivalent.
B)the effects of gravity are exactly equivalent to the effects of acceleration.
C)someone traveling at 0.9c will age at the same rate as someone at 0.99c.
D)all people see themselves at an equivalent distance to the center of the universe.

Question

Quizplus · Accepted Answer

Einstein's equivalence principle states that the effects of gravity are the same as the effects of acceleration. This means that if you are in a windowless spaceship and feel a force pushing you to the back of the ship, you can't tell if you are accelerating or if you are in a gravity field. This idea forms the basis of Einstein's theory of general relativity, which describes gravity in terms of the curvature of spacetime.

Einstein's Equivalence Principle Says That