A stone is thrown downward from a tall cliff and hits the ground below. If it were instead thrown straight upward with the same initial speed, it would end up striking the ground below (neglect air resistance) with
1) the same speed.
2) less speed.
3) greater speed.
If air resistance IS a factor, then when the stone is moving downward it will undergo
4) an increase in acceleration as velocity increases.
5) a decrease in acceleration as velocity increases.
6) a constant acceleration.
Answer: 1, 5
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