b) On the way up, does the marble accelerate, in the physics sense of the term?
c) Is the motion of the marble affected by the force of gravity on the way up?
d) Is the motion of the marble affected by the force of gravity on the way down?
e) Is the force of gravity on the marble the same on the way up as it is on the way down?
2) Which takes longer to fall to the ground: a bullet that is shot horizontally or a bullet that is dropped (both from the same height)?
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