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a_sh-v [17]
2 years ago
15

A rock is dropped from a height of 3,245 m. If we ignore air resistance, how fast will it be travelling after it falls for 3.4 s

?
Physics
1 answer:
Marta_Voda [28]2 years ago
3 0

Answer:

<u>954.4m/s</u>

Explanation:

For a free falling object,it has constant acceleration and a changing velocity.

By using the velocity-time formula, the velocity can be obtained.

The height the rock travelled is the distance.

From,

Velocity (v) = Distance (d) / Time(t)

v = 3245m/3.4s

v = <u>954.4m/s</u>

That js the answer I got. Hope it's right.

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Answer:

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From the question,

since q' = q

Then,

F = kq²/r²..................... Equation 2

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Substitute into equation 2

F = 9×10⁹(1.79×10⁻¹¹)²/(3.45×10⁻⁵ )²

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F = (28.8369×10⁻¹³)/(11.9025×10⁻¹⁰)

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Which material is used to reduce friction ?
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Answer:MOST COMMON METHOD IS USING A LUBRICANT -

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Why does food coloring diffuse faster in cold water than warm
labwork [276]
Warm water<span> has more energy </span><span>than cold water</span>
5 0
2 years ago
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The circumference of a bicycle wheel is 2 meters. if it rotates at 1 revolution per second then its linear speed is
tester [92]
Given:
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