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Fynjy0 [20]
3 years ago
14

An 80 kg skydiver is falling at terminal velocity. What is the value of air resistance acting on his body? Consider, what are th

e knowns and unknowns?
Physics
1 answer:
Mrac [35]3 years ago
5 0

Answer:

800 N

Explanation:

During terminal velocity, air resistance=weight

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the royal Gorge Bridge in Colorado rises 321 m above the Arkansas river. suppose you kick a rock horizontally off the bridge. Th
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Answer:

2.48 m/s

Explanation:

We can use the kinematic equation,

s = ut +½at²

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u = initial velocity

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Using the equation in vertical direction,

321 = 0×t +½×g×t², u = 0 because initial vertical velocity is 0

We get t = 8.01 s

Using the equation in the horizontal direction,

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So u = 2.48 m/s

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3 years ago
the strength s of a rectangular wooden beam is proportional to its width and the cube of is septh. If the beam is to be cut from
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Explanation:

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3 years ago
An electron is said to have a positive/negative/neutral charge
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An electron has a negative charge
6 0
3 years ago
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A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is trans- formed i
ra1l [238]

Answer:

a) v = 4.4 m/s

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a) ½kx² = ½mv²

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v = √(800(0.012) / 0.5) = √19.2 = 4.3817...

b) Fd = ½mv²

F = mv²/2d

F = 0.5(19.2) / (2(0.012) = 400 N

3 0
3 years ago
Photosynthesis transforms molecules of water and carbon dioxide into Molecules of?
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