Is it possible, according to Einstein's relativity, for a child ...

[nevelica]

Is it possible, according to Einstein's relativity, for a child to be biologically older than his or her parents?
 
  A) Yes, if the parents go on a long and fast trip and return to Earth.
  B) Yes, if the child goes on a long and fast trip and returns to Earth.
  C) No, because it is not possible to actually move backward through time.
  D) No, because the principles of relativity don't have anything to do with actual biological aging.
  E) No, because the relativity of time does not allow the actual order of events in time to be switched around.

Question 2

A Ferris wheel rotating at 20 rad/s slows down with a constant angular acceleration of magnitude 5.0 rad/s2. How many revolutions does it make while slowing down before coming to rest?
 
  A) 3.2 B) 40 C) 6.4 D) 20

[recede]

Answer to Question 1

A

Answer to Question 2

C