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Eddi Din [679]
2 years ago
7

The Earth's _____

Physics
2 answers:
-BARSIC- [3]2 years ago
5 0

Answer: 2nd option, Rotation

<em>I hope this helps, and Stay Safe! :)</em>

fenix001 [56]2 years ago
4 0

Answer:

rotation

Explanation:

............................

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Explanation:

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A 1560-kilogram truck moving with a speed of 28.0 m/s runs into the rear end of a 1070-kilogram stationary car. If the collision
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Answer:

Δ KE =  249158.6 kJ  

Explanation:

given data

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solution

first we get here final speed by using conservation of momentum  that is express as

Mu = (M+m) V     .......................1

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solve it we get

final speed V = 16.60 m/s

and

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Δ KE =   \frac{1}{2} Mu^2 - \frac{1}{2}(M+m)V^2         .................2

put here value and we get

 Δ KE = \frac{1}{2}\times 1560\times 28^2 - \frac{1}{2}\times (1560 + 1070)\times 16.60^2  

solve it we get

Δ KE =  249158.6 kJ  

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The Escape speed at the surface of a certain planet is twice that of the earth. what is its mass in unit of earth's mass?
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