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A student drops a rubber ball onto a surface. Assume that this is a closed system. The ball bounces, but each successive bounce is
shorter than the one before it. Eventually, the ball comes to a stop.
Which statement provides evidence that supports the idea that energy is conserved in this closed system?
OA. The ball needs a push or pull to start moving, suggesting it needs a constant input of energy
B.
The ball moves through air, suggesting that the ball has mechanical energy
C.
The ball bounces many times, suggesting the energy is used up efficiently.
sformed into sound


Sagot :

Final answer:

The conservation of energy in a bouncing rubber ball is supported by the efficient use of energy as it bounces multiple times, transforming between potential and kinetic energy.


Explanation:

The statement that provides evidence supporting the conservation of energy in this closed system is: C. The ball bounces many times, suggesting the energy is used up efficiently. When a rubber ball bounces, the energy is transformed between potential and kinetic energy, and some energy is lost to resistances like air molecules. The decreasing height of each bounce indicates energy transformation.


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