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(BEMB) x (HCIF) > Review 3 (Kinetics Concepts) > Flashcards

Review 3 (Kinetics Concepts) Flashcards

1
Q

Which of the following will reduce the pressure of a baseball against a catcher’s hand?

Question options:

1) Reduce the force with which the ball is thrown

2) Wear a catcher’s mitt

3) Both reduce the force with which the ball is thrown and wear a catcher’s mitt

4) None of the choices is correct.

A

Both reduce the force with which the ball is thrown and wear a catcher’s mitt

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2
Q

A free body diagram includes which of the following?

Question options:

1) Sketch of an object, body, or body part being analyzed

2) Vectors representations of all forces acting on the system

3) Both choices are included in a free body diagram.

4) Neither of the above is included in a free body diagram.

A

Both choices are included in a free body diagram.

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3
Q

Mechanical stress in the lumbar vertebrae is less than expected because of which of the following structural details?

Question options:

1) Bears more weight or force than other vertebrae

2) Larger weight-bearing surface area than other vertebrae

3) Both bears more weight or force than other vertebrae and larger weight-bearing surface area than other vertebrae.

4) None of the above

A

Larger weight-bearing surface area than other vertebrae

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4
Q

Which of the following is true regarding a shot put and a softball of equal diameter?

Question options:

1) They have the same density.

2) They have the same volume.

3) Both A and B

4) None of the above

A

They have the same volume.

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5
Q

When 2 force vectors are acting parallel and in the same direction, how do you compose them into one vector?

Question options:

1) Resolve them

2) Subtract them

3) Divide them

4) Add them

A

Add them

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6
Q

When you wear a backpack, your center of gravity shifts in which direction?

Question options:

1) Up

2) Forward

3) Up and back

4) Back

A

Up and back

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7
Q

Which of the following is a correct unit of torque?

Question options:

1) Ns

2) kg m

3) N-m

4) N/s

A

N-m

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8
Q

The rotary effect created by an eccentric force defines which of the following?

Question options:

1) Moment of force

2) Torque

3) All of the above

A

All of the above
(Moment of force) , (Torque)

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9
Q

Which of the following is not true about mass?

Question options:

1) Affects force production

2) Measurement unit = kg

3) Changes depending on gravity

4) Quantity of matter

A

Changes depending on gravity

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10
Q

If two vectors lying in the same plane are added together and the result is zero, then which of the following is true of the vector quantities?

Question options:

1) They are equal in magnitude.

2) They are opposite in direction.

3) Both A and B

4) None of the above

A

Both A and B
(They are equal in magnitude) & (They are opposite in direction)

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11
Q

Which of the following is the angular equivalent of linear force?

Question options:

1) Stress

2) Torque

3) Pressure

4) Tension

A

Torque

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12
Q

When absorbing the force of a baseball, which of the following will change the impulse?

Question options:

1) Reduce the force with which the ball is thrown

2) Wear a catcher’s mitt

3) “Give” with the ball when catching

4) All of the above

A

All of the above
(Reduce the force with which the ball is thrown) , (Wear a catcher’s mitt) , (“Give” with the ball when catching)

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13
Q

Which of the following is a correct unit of inertia?

Question options:

1) psi

2) lg/m^3

3) lb/ft^3

4) None of the above

A

None of the above

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14
Q

Which of the following defines center of gravity?

Question options:

1) Intersection of the 3 cardinal planes

2) The point around which a body’s weight is equally balanced regardless of body position

3) Both A and B

4) None of the above

A

Both A and B
(Intersection of the 3 cardinal planes) & (The point around which a body’s weight is equally balanced regardless of body position)

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15
Q

Which of the following types of force act parallel to a surface?

Question options:

1) Compression

2) Shear

3) Tension

4) All of the above

A

Shear

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16
Q

Scalar quantities and vector quantities have which of the following properties in common?

Question options:

1) Magnitude

2) Direction

3) Both A and B

4) None of the above

A

Magnitude

17
Q

Which of the following statements is true?

Question options:

1) Pressure is synonymous with weight.

2) Pressure is synonymous with force.

3) Force is always a weight.

4) Weight is always a force.

A

Weight is always a force.

18
Q

Which of the following statements is/are true regarding density?

Question options:

1) Muscle tissue is more dense than fat tissue.

2) Specific weight is proportional to density.

3) Both A and B

4) None of the above

A

Both A and B
(Muscle tissue is more dense than fat tissue) & (Specific weight is proportional to density)

19
Q

Which of the following is a correct unit of pressure?

Question options:

1) slugs

2) kg/cm^2

3) Newtons

4) N/cm^2

A

N/cm^2

20
Q

Which of the following types of force exerts a pull on the body as in muscle contraction?

Question options:

1) Compression

2) Shear

3) Tension

4) All of the above

A

Tension

21
Q

In a free body diagram of the human body, which direction would the vector representing weight of the body point?

Question options:

1) Down

2) Depends on body orientation

3) Up

4) Not possible to determine

A

Down

22
Q

Which of the following quantities is calculated the same as pressure?

Question options:

1) Shear

2) Strain

3) Tension

4) Stress

A

Stress

23
Q

Which of the following is NOT true about weight?

Question options:

1) Measurement unit = kg

2) Weight is a force

3) Changes depending on gravity

4) Measurement unit = kg m s^-2

A

Measurement unit = kg

24
Q

Which of the following characteristics of a vector represents magnitude?

Question options:

1) Its angle of orientation

2) Its direction

3) Its length

4) All of the above

A

Its length

25
Q

Which of the following is a scalar quantity?

Question options:

1) Force

2) Mass

3) Velocity

4) All of the above

A

Mass

26
Q

When injury results from a single large force application, such as a tackle, the injury is usually termed what?

Question options:

1) Acute

2) Chronic

3) Repetitive

4) All of the above

A

Acute

27
Q

Stress fractures result from which of the following types of loading?

Question options:

1) Acute loading

2) Repetitive loading

3) Both A and B

4) None of the above

A

Repetitive loading

28
Q

A bending load will produce which of the following types of stress?

Question options:

1) Torsion

2) Tension

3) Both compression and tension

4) Compression

A

Both compression and tension

29
Q

Which of the following statements is/are true?

Question options:

1) Increasing the surface area over which a force is distributed increases the amount of stress acting on the surface.

2) Decreasing the surface area over which a force is distributed increases the amount of stress acting on the surface.

3) Both A and B

4) None of the above

A

Decreasing the surface area over which a force is distributed increases the amount of stress acting on the surface.

30
Q

Which of the following occurs when a bone is caused to twist about the longitudinal axis?

Question options:

1) Compression

2) Tension

3) Torsion

4) None of the above

A

Torsion

31
Q

The formula for torque includes force and which other variable?

Question options:

1) Force arm

2) Moment arm

3) Perpendicular distance from the axis of rotation

4) All of the above

A

All of the above
(Force arm) , (Moment arm) , (Perpendicular distance from the axis of rotation)

32
Q

When muscles on opposite sides of a joint develop tension, which determines the direction of joint movement?

Question options:

1) Muscle flexibility

2) Muscle strength

3) Net torque

4) None of the above

A

Net torque

33
Q

The “quantity of matter composing a body” defines which of the following?

Question options:

1) Inertia

2) Weight

3) Momentum

4) Mass

A

Mass

34
Q

Which of the following relationships is correct?

Question options:

1) a = m / F

2) F = m / a

3) m = F / a

4) None of the relationships is correct.

A

m = F / a

35
Q

Inertia is directly proportional to which quantity(s)?

Question options:

1) Acceleration

2) Force

3) Mass

4) All of the above

A

Mass

36
Q

In a free body diagram of the human body, where would the vector representing weight of the body originate?

Question options:

1) Need more information

2) Center of gravity

3) Contact between the feet and the ground

4) Head

A

Center of gravity

37
Q

Which of the following is true regarding electromyography?

Question options:

1) Measures the electrical activity produced by a muscle

2) Treats muscle injury with electrical impulses

3) Both A and B

4) None of the above

A

Measures the electrical activity produced by a muscle

38
Q

Which of the following types of force exerts a squeezing effect on the body?

Question options:

1) Compression

2) Shear

3) Tension

4) All of the above

A

Compression

39
Q

Which of the following statements is/are true regarding vector algebra?

Question options:

1) In vector resolution, when a vector is resolved into two components, they are always perpendicular.

2) In vector composition, only perpendicular components can be composed into a resultant.

3) Both A and B

4) None of the above

A

In vector resolution, when a vector is resolved into two components, they are always perpendicular.

(BEMB) x (HCIF) (32 decks)

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