Question 1

You walk north across campus for 200 meters, then turn and walk west for 150 meters. What is your resultant displacement?

Accepted Answer

250 m at 37^$\circ$ from north

Question 2

A ball is thrown at an angle of 60$\circ$ with a velocity of 25 m/s. How much of this velocity is vertical (y) and how much is horizontal (x)?

Accepted Answer

A)  x = 12.5 m/s; y = 13 m/s 
B)  x = 21.65 m/s; y = 12.5 m/s 
C)  x = 12.5 m/s; y = 21.65 m/s 
D)  x = 8.3 m/s; y = 16.7 m/s 
A)  x = 12.5 m/s; y = 13 m/s 
B)  x = 21.65 m/s; y = 12.5 m/s 
C)  x = 12.5 m/s; y = 21.65 m/s 
D)  x = 8.3 m/s; y = 16.7 m/s C

Question 3

What is the resultant displacement if a hiker walks 250 m north, turns and walks 300 m east?

Accepted Answer

A)  390.5 m at 40$\circ$ 
B)  390.5 m at 50$\circ$ 
C)  550 m at 40$\circ$ 
D)  550 m at 50$\circ$ 
A)  390.5 m at 40$\circ$ 
B)  390.5 m at 50$\circ$ 
C)  550 m at 40$\circ$ 
D)  550 m at 50$\circ$ A

Question 4

Which of the following represents a vector quantity?

Accepted Answer

A)  a distance of 30 meters 
B)  a speed of 25 m/s 
C)  a velocity of 15 m/s 
D)  a mass of 100 kilograms 
A)  a distance of 30 meters 
B)  a speed of 25 m/s 
C)  a velocity of 15 m/s 
D)  a mass of 100 kilograms

Question 5

If a muscle pulls on a bone with a force of 300 N at an angle of 30$\circ$, how much of this force is acting perpendicular to the bone?

Accepted Answer

A)  260 N 
B)  150 N 
C)  200 N 
D)  100 N 
A)  260 N 
B)  150 N 
C)  200 N 
D)  100 N

Question 6

In which of the following would vectors quantities be found?

Accepted Answer

A)  the standing posture 
B)  volleyball serve 
C)  driving a car 
D)  all of the above
Short Answer Questions 
A)  the standing posture 
B)  volleyball serve 
C)  driving a car 
D)  all of the above
Short Answer Questions

Question 7

How is the resultant portrayed in the graphic representation of vectors?

Accepted Answer

A)  the vertical side of a rectangle 
B)  the horizontal side of a rectangle 
C)  the diagonal of a rectangle 
D)  the area of a rectangle 
A)  the vertical side of a rectangle 
B)  the horizontal side of a rectangle 
C)  the diagonal of a rectangle 
D)  the area of a rectangle

Question 8

A muscle pulls on a bone with a rotary (vertical) force of 25 N. The muscle angle of pull is 15$\circ$. What is the stabilizing (horizontal) component of this pull?
 What is the total resultant muscle force exerted?

Accepted Answer

R = 96.7 N

Question 9

Which of the following may be assumed if the angle at which a vector quantity is applied is less than 45$\circ$?

Accepted Answer

A)  the x component is greater than the y component 
B)  the y component is greater than the x component 
C)  the x and y components are equal in magnitude 
D)  the resultant is less than either component 
A)  the x component is greater than the y component 
B)  the y component is greater than the x component 
C)  the x and y components are equal in magnitude 
D)  the resultant is less than either component

Question 10

Which of the following represents a scalar quantity?

Accepted Answer

A)  a muscle force of 10 Newtons 
B)  a displacement of 5 feet 
C)  a mass of 70 kilograms 
D)  a velocity of 30 m/s 
A)  a muscle force of 10 Newtons 
B)  a displacement of 5 feet 
C)  a mass of 70 kilograms 
D)  a velocity of 30 m/s

Question 11

Which of the following is not a part of kinematics?

Accepted Answer

A)  displacement 
B)  velocity 
C)  acceleration 
D)  force producing motion 
A)  displacement 
B)  velocity 
C)  acceleration 
D)  force producing motion

Question 12

The weight of a body is defined as a quantification of the force of gravity acting on which aspect of the body?

Accepted Answer

A)  resistance 
B)  weight 
C)  mass 
D)  inertia 
A)  resistance 
B)  weight 
C)  mass 
D)  inertia

Question 13

A runner pushes off of the ground with a force of 500 N at an angle of 30$\circ$. How much of this force is directed vertically?
 How much is horizontal?

Accepted Answer

vertical-2

Question 14

A football blocker tackles an opponent at an angle of 45$\circ$ to the horizontal. How do the horizontal and vertical components of force compare?

Accepted Answer

A)  greater horizontal than vertical component 
B)  greater vertical than horizontal component 
C)  both are equal 
D)  none of the above 
A)  greater horizontal than vertical component 
B)  greater vertical than horizontal component 
C)  both are equal 
D)  none of the above

Question 15

Name at least three vector quantities that are important in each of the following activities: soccer getting a box out of a cupboard walking

Accepted Answer

object or body veloc

Question 16

What is the primary element in a kinetic analysis?

Accepted Answer

A)  acceleration 
B)  cause of motion 
C)  displacement 
D)  velocity 
A)  acceleration 
B)  cause of motion 
C)  displacement 
D)  velocity

Question 17

Which of the following characterizes a vector resultant?

Accepted Answer

A)  larger than either component 
B)  usually 90 degrees 
C)  a velocity 
D)  the adjacent leg in a right triangle 
A)  larger than either component 
B)  usually 90 degrees 
C)  a velocity 
D)  the adjacent leg in a right triangle

Question 18

What may the study of batting in softball be classified as?

Accepted Answer

A)  dynamics 
B)  kinematics 
C)  mechanics 
D)  all of the above 
A)  dynamics 
B)  kinematics 
C)  mechanics 
D)  all of the above

Question 19

Which of the following would represent the description of a vector in a polar coordinate system?

Accepted Answer

A)  x = 35, y = 60 
B)  R = 42, q = 35$\circ$ 
C)  P1 = (2, 6); P2 = (5, 10) 
D)  none of the above 
A)  x = 35, y = 60 
B)  R = 42, q = 35$\circ$ 
C)  P1 = (2, 6); P2 = (5, 10) 
D)  none of the above

Question 20

Two muscles are attached to bone at the same point. Muscle A is pulling with 90 N of force at an angle of 25$\circ$. Muscle B pulls with 110 N of force at an angle of 10$\circ$. What is the combined effect of these two muscles in terms of resultant force and angle of pull?

Accepted Answer

Exam 10: Terminology and Measurement in Biomechanics

You walk north across campus for 200 meters, then turn and walk west for 150 meters. What is your resultant displacement?

A ball is thrown at an angle of 60 ∘\circ∘ with a velocity of 25 m/s. How much of this velocity is vertical (y) and how much is horizontal (x)?

What is the resultant displacement if a hiker walks 250 m north, turns and walks 300 m east?

Which of the following represents a vector quantity?

If a muscle pulls on a bone with a force of 300 N at an angle of 30 ∘\circ∘ , how much of this force is acting perpendicular to the bone?

In which of the following would vectors quantities be found?

How is the resultant portrayed in the graphic representation of vectors?

A muscle pulls on a bone with a rotary (vertical) force of 25 N. The muscle angle of pull is 15 ∘\circ∘ . What is the stabilizing (horizontal) component of this pull? What is the total resultant muscle force exerted?

Which of the following may be assumed if the angle at which a vector quantity is applied is less than 45 ∘\circ∘ ?

Which of the following represents a scalar quantity?

Which of the following is not a part of kinematics?

The weight of a body is defined as a quantification of the force of gravity acting on which aspect of the body?

A runner pushes off of the ground with a force of 500 N at an angle of 30 ∘\circ∘ . How much of this force is directed vertically? How much is horizontal?

A football blocker tackles an opponent at an angle of 45 ∘\circ∘ to the horizontal. How do the horizontal and vertical components of force compare?

Name at least three vector quantities that are important in each of the following activities: soccer getting a box out of a cupboard walking

What is the primary element in a kinetic analysis?

Which of the following characterizes a vector resultant?

What may the study of batting in softball be classified as?

Which of the following would represent the description of a vector in a polar coordinate system?

Two muscles are attached to bone at the same point. Muscle A is pulling with 90 N of force at an angle of 25 ∘\circ∘ . Muscle B pulls with 110 N of force at an angle of 10 ∘\circ∘ . What is the combined effect of these two muscles in terms of resultant force and angle of pull?

Introduction to the Study of Kinesiology

The Musculoskeletal System: The Skeletal Framework and Its Movements

The Musculoskeletal System: The Musculature

The Neuromuscular Basis of Human Motion

The Upper Extremity: The Shoulder Region

The Upper Extremity: The Elbow, Forearm, Wrist, and Hand

The Lower Extremity: The Hip Region

The Lower Extremity: The Knee, Ankle, and Foot

The Spinal Column and Thorax

The Description of Human Motion

The Conditions of Linear Motion

The Conditions of Rotary Motion

The Center of Gravity and Stability

Kinesiology of Fitness and Exercise

Moving Objects: Pushing and Pulling

Moving Objects: Throwing, Striking, and Kicking

Locomotion: Solid Surface

Locomotion: The Aquatic Environment

Locomotion: When Suspended and Free of Support

Impact

Instrumentation for Motion Analysis

Filters

A ball is thrown at an angle of 60^$\circ$ with a velocity of 25 m/s. How much of this velocity is vertical (y) and how much is horizontal (x)?

If a muscle pulls on a bone with a force of 300 N at an angle of 30^$\circ$, how much of this force is acting perpendicular to the bone?

A muscle pulls on a bone with a rotary (vertical) force of 25 N. The muscle angle of pull is 15^$\circ$. What is the stabilizing (horizontal) component of this pull? What is the total resultant muscle force exerted?

Which of the following may be assumed if the angle at which a vector quantity is applied is less than 45^$\circ$?

A runner pushes off of the ground with a force of 500 N at an angle of 30^$\circ$. How much of this force is directed vertically? How much is horizontal?

A football blocker tackles an opponent at an angle of 45^$\circ$ to the horizontal. How do the horizontal and vertical components of force compare?

Two muscles are attached to bone at the same point. Muscle A is pulling with 90 N of force at an angle of 25^$\circ$. Muscle B pulls with 110 N of force at an angle of 10^$\circ$. What is the combined effect of these two muscles in terms of resultant force and angle of pull?