A 100-Kg Ball Has Zero Kinetic and Potential Energy

question 45

Multiple Choice

A 1.00-kg ball has zero kinetic and potential energy.Ernie drops the ball into a 10.0-m-deep well.Just before the ball hits the bottom,the sum of its kinetic and potential energy is:

• A) zero.
• B) 98 J.
• C) −98 J.
• D) 196 J.
• E) ​- 196 J.

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Definitions:

Myofibrils

Long, thread-like structures within muscle cells that are responsible for muscle contraction.

Myosin

A motor protein involved in muscle contraction and movement in other types of cells, working as part of the actin-myosin complex.

Actin Myofilaments

Protein filaments in muscle cells that, along with myosin, facilitate muscle contraction and movement.

Sarcolemma

The cell membrane of a muscle fiber that encloses the cytoplasm and organelles of the cell and plays a critical role in muscle contraction.