Which of the following inertial reference frames are proper frames for the two events listed? Choose all that apply.
RED FRAME: Event A happened at a different place than event B.
ORANGE FRAME: Event C happened at (-7 m, 3 m, 4 m) and event D happened at (-7 m, 3 m, 5 m).
YELLOW FRAME: The distance between where event E occurred and where event F occurred was 0 m.
GREEN FRAME: A rocket was traveling at a constant velocity when it passed through a stationary tunnel. Event G was the front of the rocket entering the tunnel and event H was the the front of the rocket leaving the tunnel.
BLUE FRAME: A stationary rocket was engulfed by a hollow cylinder that was moving at a constant velocity. Event J was the front of the rocket entering the cylinder and event K was the the front of the rocket leaving the cylinder.
Which of the following inertial reference frames are proper frames for the two events listed? Choose...
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