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ddd [48]
3 years ago
5

If a pedestrian walked 900 meters forward and 300 meters back

Physics
1 answer:
serious [3.7K]3 years ago
5 0

Answer:

B

Explanation:

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What is the acceleration experienced by a car that takes 10s to reach 27m/s from rest
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|acceleration|  =  (change in speed) / (time for the change)

Change in the car's speed = (27 - 0) = 27 m/s
Time for the change  =  10 sec

|acceleration| = (27 m/s) / (10 s)  =  2.7 m/s² .

That's the magnitude of the car's acceleration.
We don't know anything about its direction.
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A bicyclist of mass 112 kg rides in a circle at a speed of 8.9 m/s. If the radius of the circle is 15.5 m, what is the centripet
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The centripetal force, Fc, is calculated through the equation, 
                                    Fc = mv²/r
where m is the mass,v is the velocity, and r is the radius. 
Substituting the known values,
                                     Fc = (112 kg)(8.9 m/s)² / (15.5 m)
                                         = 572.36 N
Therefore, the centripetal force of the bicyclist is approximately 572.36 N. 
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3 years ago
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A. pulls back on the Earth, which is the main cause of the rise and fall of the ocean tides on Earth.

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Which of the following statements describes the movement of air?
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The movement of air flows from high pressure to low pressure
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Which of the following provides evidence that earth is rotating? The sun rises and sets, The plane of a foucault pendulum appear
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The answer would be '<span>The plane of a Foucault pendulum appears to shift its orientation' because it is an experiment to demonstrate the rotation of the earth.

Hope this helps.</span>
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