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jeyben [28]
3 years ago
7

A chicken crosses a 7.50 m wide road at a constant speed of 0.367 m/s. How much time does it take to cross (in seconds)?

Physics
2 answers:
mars1129 [50]3 years ago
7 0
<h3><u>Answer;</u></h3>

= 20.436 seconds

<h3><u>Explanation;</u></h3>

Speed = Distance × time

Therefore;

Time = Distance/speed

Distance = 7.50 m, speed = 0.367 m/s

Time = 7.50/0.367

         <u>= 20.436 seconds </u>

Airida [17]3 years ago
6 0

Answer:

Time taken by it is 20.43 seconds.

Explanation:

It is given that,

Distance covered by the chicken, d = 7.5 m

Speed of the chicken, v = 0.367 m/s

We need to find the time taken to cross. Time taken by an object is given by :

t=\dfrac{d}{v}

t=\dfrac{7.5\ m}{0.367\ m/s}

t = 20.43 s

So, the time taken by it to cross the road is 20.43 seconds. Hence, this is the required solution.

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  • K.E=18750J
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\boxed{\sf K.E=\dfrac{1}{2}mv^2}

\\ \sf\longmapsto 18750=\dfrac{1}{2}2100v^2

\\ \sf\longmapsto 18750=1050v^2

\\ \sf\longmapsto v^2=\dfrac{18750}{1050}

\\ \sf\longmapsto v^2=17.85m^2

\\ \sf\longmapsto v=\sqrt{17.85}

\\ \sf\longmapsto v=4.1m/s

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Answer:

(a) 3.24 w (b) 44.44 ohm

Explanation:

It is given that car draws 0.27 A current so current I = 0.27 A

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(b) The resistance is defined as the ratio of voltage and current

So resistance R=\frac{V}{I}=\frac{12}{0.27}=44.44 ohm

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now from above equation we have

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