QUIZZES

Question 1

Convert 95 mph (the speed of a major league fastball) to meters per second

Answer 1

42.56

Question 2

Anatomy Review: Abduction of the upper extremity takes place in the _________ plane and around the _______ axis.

sagittal . . . anteroposterior
sagittal . . . longitudinal
frontal . . . longitudinal
frontal . . . anteroposterior

Answer 2

frontal . . . anteroposterior

Question 3

Which of the following pairs of quantities are expressed in the same units of measure?

velocity & acceleration
all three previous choices are correct
speed & velocity
step rate & step length

Answer 3

speed & velocity

Question 4

When considering an object, body, or body segment, weight is considered an external force and never an internal force.

True
False

Answer 4

True

Question 5

Rigid-body mechanics and deformable-body mechanics are the two branches of mechanics we will study most during the semester.

True
False

Answer 5

False

Question 6

Horizontal abduction and adduction takes place in the horizontal or transverse plane, around the _____________ axis.

Anteroposterior
Transverse
Longitudinal
Dorsal

Answer 6

Longitudinal

Question 7

The first person to be mentioned in the history of biomechanics, as presented in class was:

Sir Isaac Newton
Dr. Smith’s grandfather
Galileo
Aristotle

Answer 7

Aristotle

Question 8

If 2y = 3x + 24 and x=40 what is y?

27
120
144
72

Answer 8

72

Question 9

What is the broad, superficial muscle that covers much of the upper back?

Deltoid
Gastrocnemius
Trapezius
Pectoralis minor

Answer 9

Trapezius

Question 10

Which of the following is NOT a basic dimension?

Length
Weight
Time
Mass

Answer 10

Weight

Question 11

When velocity changes sign this indicates a change in direction of movement.

True
False

Answer 11

True

Question 12

Distance and speed are scalar quantities.

True
False

Answer 12

True

Question 13

Which is NOT one of the basic dimensions we mentioned in class?

Length
Mass
Weight
Time

Answer 13

Weight

Question 14

At the highest point of a vertical jump, a person’s instantaneous vertical velocity is:

0 (zero)
-9.8 m/s
+9.8 m/s
It is impossible to answer this question with the amount of information provided.

Answer 14

0 (zero)

Question 15

One km is smaller than 1 mile.

True
False

Answer 15

True

Question 16

The motion of my forearm when I flex at the elbow joint is classified as curvilinear motion.

True
False

Answer 16

False

Question 17

The motion of a pendulum is an example of:

Rectilinear Motion
Curvilinear Motion
Angular Motion
General Motion

Answer 17

Angular Motion

Question 18

Dr. Heise is 6 feet, 2 inches tall. How tall, in centimeters is he? Round to the nearest integer. There are 2.54 cm in 1 inch.

1.83
1.88
183
188

Answer 18

188

Question 19

If a person goes from no movement to 5 m/s over the span of 10 s, what is their average acceleration?

2 m/s2
5 m/s2
0.5 m/s2
0.25 m/s2

Answer 19

0.5 m/s2

Question 20

When falling to earth, a body has a vertical acceleration of -9.8 m/s2.

True
False

Answer 20

True

Question 21

Linear displacement may be greater than linear distance, but linear distance can never be greater than linear displacement.

True
False

Answer 21

False

Question 22

Mike Powell’s long jump world record is greater than 25 ft.

True
False

Answer 22

True

Question 23

When slowing down in a positive direction, a person’s acceleration would be:

0 (zero)
Positive
Negative
It is impossible to answer this question with the amount of information provided.

Answer 23

Negative

Question 24

A free body diagram is a schematic picture showing _______________ acting on a system to be analyzed.

All internal forces
All external forces
All internal and external forces
All internal and external forces, except weight

Answer 24

All external forces

Question 25

Units for linear velocity include: m/s miles/hr feet/s all are appropriate velocity units

Answer 25

all are appropriate velocity units

Question 26

The unit of measurement for displacement can be m. True False

Answer 26

True

Question 27

Displacement indicates the straight-line distance and direction from an object's start point to end point. True False

Answer 27

True

Question 28

What is the acceleration for a cyclist slowing down in a positive direction from 10 m/s to 5 m/s in a period of 10 s? 1.5 m/s/s - 1.5 m/s/s 0.5 m/s/s - 0.5 m/s/s

Answer 28

- 0.5 m/s/s

Question 29

Which of the following units for velocity come from the International System? m/s miles/s feet/s kg/s

Answer 29

m/s

Question 30

The motion of the arm during a properly executed throwing motion is such that: Group of answer choices The distal segments begin to rotate prior to the proximal segments. The proximal segments begin to rotate prior to the distal segments. All segments begin to rotate at the same time. The order of segment rotation is irrelevant.

Answer 30

The proximal segments begin to rotate prior to the distal segments.

Question 31

If a pendulum swings forward 30 degrees and then back 10 degrees, the angular distance and displacement are: Distance: 40 degrees, displacement: 40 degrees Distance: 40 degreees, displacement: 30 degrees Distance: 30 degrees, displacement: 20 degrees Distance: 40 degrees, displacement: 20 degrees

Answer 31

Distance: 40 degrees, displacement: 20 degrees

Question 32

One degree is larger than one radian. Group of answer choices True False

Answer 32

False

Question 33

If a body segment is rotating with a constant angular velocity, the angular acceleration of the segment AND the linear, tangential acceleration of a point on the distal end of the segment are zero. True False

Answer 33

True

Question 34

With a constant, non-zero angular velocity, the tangential linear velocity of a rotating point about the axis is: Group of answer choices Greatest when the distance between the axis and point is smallest Greatest when the distance between the axis and point is greatest The same no matter the distance between the axis and point 0

Answer 34

Greatest when the distance between the axis and point is greatest

Question 35

The linear velocity of a point on a body undergoing angular motion is equal to: Group of answer choices (radius)*(arclength) where radius is the distance from the axis of rotation to the point (radius)*(angular acceleration) where radius is the distance from the axis of rotation to the point (radius)*(liner displacement) where radius is the distance from the axis of rotation to the point (radius)*(angular velocity) where radius is the distance from the axis of rotation to the point

Answer 35

(radius)*(angular velocity) where radius is the distance from the axis of rotation to the point

Question 36

What is the knee joint angle when the body is in the anatomical position? Group of answer choices 0 degrees 90 degrees 180 degrees 270 degrees

Answer 36

180 Degrees

Question 37

An angle calculated between the thigh and a horizontal plane is: Group of answer choices A relative angle An absolute angle A joint angle An inferior angle

Answer 37

An absolute angle

Question 38

When a pendulum starts from rest and swings 20 degrees in 2 seconds, the average angular velocity is: Group of answer choices 0 10 degrees/s 20 degrees/s not enough information to answer

Answer 38

10 degrees/s

Question 39

If a body is rotating with a constant angular velocity, the angular acceleration AND the linear, centripetal acceleration of the body are zero. Group of answer choices True False

Answer 39

False Even with no angular acceleration, constant angular motion gives rise to a nonzero centripetal acceleration.

Question 40

Relative angle:

Answer 40

the angle formed between two adjacent body segments

Question 41

Absolute angle:

Answer 41

the angle formed by a body segment with respect to an absolute reference line, usually either the horizontal or vertical.