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vaieri [72.5K]
3 years ago
8

An airplane was moving 1200 km per minute traveling in a north-to-south direction when they were spotted by air traffic control.

Because they were only 2 miles off the ground and 5 miles away the airplane was contacted for safety concerns.
Which best describes the motion of the airplane?

Its acceleration was 1200 km/s
Its speed was 1200 km/m southward
Its velocity was 20 km/s southward
Its velocity was 20 km/m
Physics
2 answers:
Feliz [49]3 years ago
7 0

Its velocity was 20 km/s southward

bulgar [2K]3 years ago
4 0

Answer:

Its velocity was 20 km/s southward

Explanation:

As we know that airplane is moving from North to South

So here we will have

v = 1200 km/min

now we know

1 min = 60 s

so we will have

v = 1200 \times \frac{1}{60}

v = 20 km/s

so the velocity of the airplane is towards South moving with speed v = 20 km/s so correct answer will be

Its velocity was 20 km/s southward

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The brainstem is to breathing and arousal as the limbic system is to memories and: (2 points)
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Answer:

The brainstem is to breathing and arousal as the limbic system is to memories and emotion. See the explanation below, please.

Explanation:

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Find the range of a projectile launched at an angle of 30° with an initial velocity of 20m/s.​
Tems11 [23]

Answer:

<em>The range is 35.35 m</em>

Explanation:

<u>Projectile Motion</u>

It's the type of motion that experiences an object projected near the Earth's surface and moves along a curved path exclusively under the action of gravity.

Being vo the initial speed of the object, θ the initial launch angle, and g=9.8m/s^2 the acceleration of gravity, then the maximum horizontal distance traveled by the object (also called Range) is:

\displaystyle d={\frac  {v_o^{2}\sin(2\theta )}{g}}

The projectile was launched at an angle of θ=30° with an initial speed vo=20 m/s. Calculating the range:

\displaystyle d={\frac  {20^{2}\sin(2\cdot 30^\circ )}{9.8}}

\displaystyle d={\frac  {400\sin(60^\circ )}{9.8}}

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In this case s = 520 m, t = 223 seconds, a =0 m/s^2

Substituting

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s = 520 m, t = 223 seconds, u =0 m/s

Substituting

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