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Suppose you are at the edge of a cliff and you throw one ball downward and another ball upward at the same speed. Which will hit the ground faster? Does direction of the thrown ball make a difference? Explain.
Rotation
Movement of a structure about its axis.
Linea Alba
A fibrous structure that runs down the midline of the abdomen, providing muscle attachment.
Serratus Anterior
A muscle of the chest that assists in the upward movement of the arm and in the breathing process.
Rectus Abdominis
A long muscle running from the pubis to the rib cage, involved in flexing the lumbar spine and stabilizing the pelvis and lower back.
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