Which of the following characterizes internal and external forces?
A) Gravity is an internal force;muscle contraction is an external force.
B) Muscle contraction is an internal force;gravity is an external force.
C) Gravity and muscle contraction are both internal forces.
D) Gravity and muscle contraction are both external forces.
Correct Answer:
Verified
Q21: Which of the following terms means toward
Q22: Gravity is a force that:
A)pulls upward
B)pushes downward
C)pulls
Q23: A concentric contraction has what effect on
Q24: When an isometric muscle contraction occurs,which of
Q25: What type of contraction causes the attachments
Q27: What type of contraction brings the attachments
Q28: Gravity neutral motions usually occur in what
Q29: What type of contraction causes the attachments
Q30: An eccentric contraction has what effect on
Q31: The usual purpose of an eccentric muscle
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