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weeeeeb [17]
3 years ago
6

Clear cutting has a similar effect as controlled burning of a forest. True False

Physics
2 answers:
yan [13]3 years ago
4 0

The answer is false, I did the assignment and true was wrong. The right answer is "False".  

Proof:

mariarad [96]3 years ago
3 0
<span>Clear cutting has a similar effect as controlled burning of a forest is True.


True </span>
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Answer:

hellooooo :) ur ans is 33.5 m/s

At time t, the displacement is h/2:

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h = gt²

At time t+1, the displacement is h.

Δy = v₀ t + ½ at²

h = 0 + ½ g (t + 1)²

h = ½ g (t + 1)²

Set equal and solve for t:

gt² = ½ g (t + 1)²

2t² = (t + 1)²

2t² = t² + 2t + 1

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(t − 1)² = 2

t − 1 = ±√2

t = 1 ± √2

Since t > 0, t = 1 + √2.  So t+1 = 2 + √2.

At that time, the speed is:

v = at + v₀

v = g (2 + √2) + 0

v = g (2 + √2)

If g = 9.8 m/s², v = 33.5 m/s.

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