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nlexa [21]
3 years ago
9

As a marble rolls across the floor, it gradually slows to a stop due to friction. Which statement best describes the change in m

echanical energy of this system?
a.) Mechanical energy was transferred from the floor to the marble.

b.) Mechanical energy was transferred from the marble to the floor.

c.) The total energy of the marble and floor, including the mechanical energy, was reduced to zero.

d.) The mechanical energy of the marble was transformed into nonmechanical energy.
Physics
1 answer:
Olegator [25]3 years ago
3 0

Answer:

I belive it would be "C"

Explanation:

If it was any of the other answers "B" it would instantly stop. "A" it would roll forever.

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Answer:

 v = 29.4 m / s

Explanation:

For this exercise we can use the conservation of mechanical energy

Lowest starting point.

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final point. Higher

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Let's use trigonometry to lock her up

          cos 60 = y / L

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energy is conserved

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let's calculate

          v² = 2 9.8 3.0 (1- cos 60)

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