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zaharov [31]
2 years ago
15

Que distancia se desplaza un objeto que se mueve con velocidad de 72km/h durante 10 min?

Physics
1 answer:
Allushta [10]2 years ago
4 0

Answer:

I would love to help, Could you put the question in English?

Explanation:

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Answer:

Force = mass × acceleration

Acceleration:

{ \tt{15 = (22 \times a)}} \\ { \tt{a =  \frac{15}{22}  \:  {ms}^{ - 2} }}

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{ \bf{v = u + at}}

Change = v - u:

{ \tt{v - u = (a \times t)}} \\ { \tt{v - u = ( \frac{15}{22} \times 1.2) }} \\ { \tt{v - u = 0.82 \:  {ms}^{ - 2} }}

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A motion sensor emits sound, and detects an echo 0.0115 s after. A short time later, it again emits a sound, and hears an echo a
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1.17 m

Explanation:

From the question,

s₁ = vt₁/2................ Equation 1

Where s₁ = distance of the reflecting object for the first echo, v = speed of the sound in air, t₁ = time to dectect the first echo.

Given: v = 343 m/s, t = 0.0115 s

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s₁ = (343×0.0115)/2

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s₂ = vt₂/2.................. Equation 2

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Given: v = 343 m/s, t₂ = 0.0183 s

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s₂ = (343×0.0183)/2

s₂ = 3.14 m

The distance moved by the reflecting object from s₁ to s₂ = s₂-s₁

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