Elevator Time of Flight
Luke throws a ball straight up in the air inside an elevator while it's at rest, and measures how long it takes for the ball to come back in his hand. Then he throws the ball again while the elevator is moving up, and finds that the ball spent more time in the air.
If he threw the ball with the same speed (with respect to him) both times, then how did the speed of the elevator change during the flight of the ball?
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1 solution
in the frame of reference fixed to elevator it will experience pseudo force in direction opposite to the direction of accleration of lift so as time taken is more in frame of reference fixed to elevator it experiences a upward force along with gravity