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KIM [24]
3 years ago
9

What would spines be helpful for?

Physics
2 answers:
Komok [63]3 years ago
6 0
I would go with D is the best answer up here
ANEK [815]3 years ago
3 0
A and c...............................
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The speed at which a wave is transmitted depends on _____. A. the state of matter of the medium B. whether or not the wave is re
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A woman on a bridge 95.6 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an a
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Answer:

The speed of the raft is 1.05 m/s

Explanation:

The equation for the position of the stone is as follows:

y = y0 + v0 · t + 1/2 · g · t²

Where:

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y0 = initial height

v0 = initial speed

t = time

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x = x0 + v · t

Where:

x = position of the raft at time t

x0 = initial position

v = velocity

t = time

To find the speed of the raft, we have to know how much time the raft traveled until the stone reached the river. For that, we can calculate the time of free fall of the stone:

y = y0 + v0 · t + 1/2 · g · t²      (v0=0 because the stone is dropped from rest)

If we place the origin of the frame of reference at the river below the bridge:

0 m = 95.6 m - 9.8 m/s² · t²

-95.6 m / -9,8 m/s² = t²

t = 3.12 s

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3.28 m / 3.12 s = v

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3 years ago
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The wood wrangler track team traveled South toward Garner Middle
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2km/min

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South is placed there to show what direction she went, as velocity has both magnitude and direction

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3 years ago
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