Question 1

Select the best definition of momentum.

Accepted Answer

Momentum is defined as the product of mass and velocity. Option C represents this definition. Option A is the formula for average velocity, not momentum. Option B is the formula for pressure, not momentum. Option D is the formula for work, not momentum.

Question 2

Which basic directional term means toward the surface (skin)of the body?

Accepted Answer

The term "superficial" refers to a direction toward the surface or outer layer of the body.

Question 3

Select the definition of Newton's second law of motion.

Accepted Answer

Newton's second law of motion states that the change in motion (acceleration) of an object is proportional to the force impressed on it and is made in the direction of the force. This can be mathematically expressed as F = ma, where F is the force applied, m is the mass of the object, and a is the resulting acceleration.

Question 4

Select the best definition of the term center of mass (COM).

Accepted Answer

The center of mass is the point at which the weight and mass of an object are equally distributed or balanced in all directions. It is the point where an object can be balanced perfectly on a single point, and it is a key concept in physics for understanding how objects move and respond to forces. Option A refers to inertia, option B refers to kinetic energy, and option C refers to torque.

Question 5

In the correct anatomic position,which way do the palms of the hand face?

Accepted Answer

The correct anatomic position is standing upright, facing forward, with the arms at the sides and the palms facing forward towards the front of the body.

Question 6

Select the best definition of pressure (p).

Accepted Answer

Pressure is defined as force per unit area. Therefore, choice B, "Force/area" is the best definition for pressure.

Question 7

Select the definition of Newton's third law of motion.

Accepted Answer

Newton's third law of motion states that for every action, there is an equal and opposite reaction. This means that when an object exerts a force on another object, the second object will exert a force back on the first object that is equal in magnitude but opposite in direction.

Question 8

Which of the following is an example of linear motion?

Accepted Answer

Linear motion is defined as motion in a straight line with a constant speed or velocity. Doing a dumbbell curl with the arm involves linear motion as the arm moves up and down in a straight line during the exercise. The other options involve rotational or curvilinear motion which is not linear.

Question 9

Which cardinal plane divides the body into front and back parts?

Accepted Answer

The coronal plane divides the body into front (anterior) and back (posterior) parts. The other planes are as follows: Transverse plane divides the body into upper (superior) and lower (inferior) parts; Horizontal plane is another term for the transverse plane; Sagittal plane divides the body into left and right parts.

Question 10

Biomechanics helps the health professional understand the cause and severity associated with an injury.Which of the following is NOT a factor when determining this?

Accepted Answer

Biomechanics involves the study of the mechanical laws relating to the movement or structure of living organisms. When determining the cause and severity of an injury, factors such as magnitude, location, direction, and duration of the force applied are crucial. Speed, while related to biomechanics, is not directly a factor in determining the cause and severity of an injury in the same way these other factors are. It's more about how the force is applied (magnitude, direction, duration) and where it impacts the body (location) rather than the speed of the movement itself.

Question 11

Which basic directional term means away from the midline of the body?

Accepted Answer

Lateral means away from the midline of the body.

Question 12

Select the best definition of kinetic energy (KE).

Accepted Answer

Kinetic energy is the energy that an object possesses due to its motion. It is dependent on the object's mass and velocity. Option A refers to potential energy, option B refers to torque, and option D refers to pressure.

Question 13

Which of the following injuries is caused by shear?

Accepted Answer

The answer of Which of the following injuries is caused...

Question 14

Select the best definition of work (W).

Accepted Answer

Work is defined as the product of force and the distance an object moves in the direction of the force. Choice D is the only one that represents this definition. Choice A is the formula for power, not work. Choice B is the formula for pressure. Choice C is not a valid formula for work.

Question 15

Which basic directional term means toward the feet?

Accepted Answer

The basic directional term that means toward the feet is inferior.

Question 16

Select the best definition of the term force (F).

Accepted Answer

Force is defined as a push or pull acting on an object. Option A refers to inertia, option C refers to mass, and option D refers to center of gravity.

Question 17

What is the definition of Newton's first law of motion?

Accepted Answer

Newton's first law of motion states that a body at rest will remain at rest, and a body in motion will continue to move in a straight line with a constant speed, unless acted upon by a net external force. This is also known as the law of inertia.

Question 18

Select the best definition for the term mass (m).

Accepted Answer

Mass is the measure of the amount of matter an object contains within its physical boundaries. It is an intrinsic property of matter and does not vary with location or environment. The other options, such as A refer to inertia and B refer to force, and D refers to the center of mass.

Question 19

What is the definition of kinematics?

Accepted Answer

Kinematics refers to the description of the motion of objects using concepts such as position, velocity, and acceleration. It does not involve the analysis of loads or the study of applied human anatomy.

Question 20

Which cardinal plane divides the body into right and left parts?

Accepted Answer

The sagittal plane divides the body into right and left parts.

Quiz 16: Biomechanics and Kinesiology

Select the best definition of momentum.

Which basic directional term means toward the surface (skin) of the body?

Select the definition of Newton's second law of motion.

Select the best definition of the term center of mass (COM) .

In the correct anatomic position,which way do the palms of the hand face?

Select the best definition of pressure (p) .