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course Phy 231
2/10 10:15pm
Horizontally, I'm not quite sure whether the velocity is changing. I'm inclined to say it isn't-- that its horizontal position is changing at a consistent rate until it lands.
Vertically, it definitely slows down until it reaches its peak, and then begins to speed up steadily until it hits the ground.
I believe the velocity function will decrease slightly until the midpoint and then increase rapidly from there. So it would be a concave upward curve.
Acceleration, I would imagine, would be constant. The force of the cannon itself only acts once, at the moment it fires, so it informs initial velocity but should not influence acceleration. The force of gravity, however, is consistently -9.8m/s^2.
I'm not sure how to describe the vectors themselves. I know vectors are straight lines, so would velocity vector be a straight, rising line and the acceleration vector be a straight, falling line?"
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I meant to refer to the velocity and acceleration graphs, not the vectors.
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