Exam 3: Basic Biomechanical Factors and Concepts

In rapid running movements in which moving inertia is high, an individual has to raise the body's center of gravity to maintain balance when stopping or changing direction.

In the context of wheels and axles, only the radius of the wheel corresponds to the force arms.

-Newton's law of inertia states that:

Identify Newton's law of reaction.

Which of the following statements is false about forces?

Momentum, or the quality of motion, is equal to __________.

In the context of the factors in use of anatomical levers, which of the following statements defines the term force arm?

Velocity is how fast an object is moving, or the distance an object travels in a specific amount of time.

The mass of an object affects the speed and acceleration of the object in physical movements.

-Which of the following pairs of variables exhibits an inverse relationship?

Which of the following terms refers to the tendency for the current state of motion to be maintained, whether a body segment is moving at a particular velocity or is motionless?

A person riding a bicycle in a straight line at 7.5 miles per hour would be more balanced than the same person riding the bicycle at 4.8 miles per hour in a straight line.

Assuming that the bat speed and pitched ball velocity were the same, the ball hit with the middle of the bat would travel farther than the ball hit with the larger end of the bat.

A football player in a four-point stance has more balance than the same football player in a three-point stance.

-Which of the following is the most common form of simple machine found in the human body?

Which of the following statements is correct?

Statics involves all forces acting on a body being in balance resulting in the body being in equilibrium.

-In the human body when the triceps applies a force to the olecranon in extending the non-supported forearm at the elbow, it exemplifies:

Statics involves the study of systems that are in a constant state of motion.

Which of the following exemplifies a second-class lever in the human body?