Posted by michael on Tuesday, November 13, 2012 at 9:47am.
a,c,d are required by gravity.
b is never true, unless the projectile is sitting on a table or riding in a box in a train car
e is true only if dropped or shot downward
f is not true if shot straight up, or down. Hmm Actually, it does have horizontal motion in those two cases, the horizontal motion is zero. Zero in fact is a valid horizontal motion. So if you want to argue with your teacher, include f.
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