In “zero-g” airplane rides, passengers can float around the cabin, as if they were weightless. A flight trajectory for such a ride is shown below, with a few points during the journey labelled. Which of the following statements is correct? Take a to be the acceleration of the plane during the “zero-g” part of the flight.
Answer Choices
A. The "zero- g " flight begins at a and ends at c, during which |\mathbf{a}|=g and a points up.
B. The "zero- g " flight begins at a and ends at e, during which |\mathbf{a}|=0.
C. The "zero- g " flight begins at b and ends at d, during which |\mathbf{a}|=g and a points down.
D. The "zero- g " flight begins at c and ends at e, during which |\mathbf{a}|=g and a points down.
E. The "zero- g " flight begins at d and ends at e, during which |\mathbf{a}|=0.
