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Question
A projectile is launched vertically upward at 40 m/s. If air resistance is negligible, its speed upon returning to its starting point is1) less than 40 m/s.
2) 40 m/s.
3) more than 40 m/s.
All along the ball's trajectory, its acceleration is
4) g downward.
5) g at an angle.
6) zero.
If air resistance does affect motion, then the ball's speed upon returning to its starting point is
7) less than 50 m/s.
8) 50 m/s.
9) more than 50 m/s.
Answer
This answer is hidden. It contains 5 characters.
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