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Definition of a Projectile:
A projectile is an object for which the only force acting upon it is gravity. The force of air resistance is negligibly small or nonexistent for a projectile.
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A projectile can be moving upward or downward. And a projectile could be moving horizontally in addition to moving upward or downward. There may be a component of velocitydirected in any direction. But don't be fooled! All this describes the velocity of a projectile. If an object is a projectile, the only force is gravity and gravity is a downward force.
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Like all questions in this mission, it is the definition of a projectile which must guide your thinking (see Dictionary section). If the only force acting upon a projectile is gravity; and if gravity is directed downward, then the answer to this question is ... (you can complete the logic).
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