Question 1

Why do elite long jumpers have take-off angles far less than the optimal 45°?

Accepted Answer

A)  take-off velocity is higher during lower take-off angles 
B)  relative take-off height is zero 
C)  both A and B 
D)  none of the above 
A)  take-off velocity is higher during lower take-off angles 
B)  relative take-off height is zero 
C)  both A and B 
D)  none of the above

Question 2

What is the average velocity of a cyclist who covers 5 miles in 30 minutes?

Accepted Answer

A)  5 mi/hr 
B)  10 mi/hr 
C)  30 mi/hr 
D)  60 mi./hr 
A)  5 mi/hr 
B)  10 mi/hr 
C)  30 mi/hr 
D)  60 mi./hr

Question 3

Discuss the 3 mechanical factors that influence a projectile, including how a change in one will affect the others.

Accepted Answer

The three mechanical factors that influe

Question 4

Which of the following represents horizontal acceleration of a projectile?

Accepted Answer

A)  -9.81 m/s2 
B)  -9.81 m/s 
C)  0 m/s2 
D)  0 m/s 
A)  -9.81 m/s2 
B)  -9.81 m/s 
C)  0 m/s2 
D)  0 m/s

Question 5

It takes a swimmer 1 hour to cross a lake that is 1/2 mile wide. What is true of the swimmer's acceleration?

Accepted Answer

A)  it is 1/2 mi/hr 
B)  it is 1 mi/hr 
C)  it is equal to velocity squared 
D)  it cannot be determined from the information given 
A)  it is 1/2 mi/hr 
B)  it is 1 mi/hr 
C)  it is equal to velocity squared 
D)  it cannot be determined from the information given

Question 6

In the formula v2 = v1, what is known about acceleration?

Accepted Answer

A)  acceleration = -9.81 m/s2 
B)  acceleration = 0 
C)  both A and B 
D)  need more information 
A)  acceleration = -9.81 m/s2 
B)  acceleration = 0 
C)  both A and B 
D)  need more information

Question 7

Marion Jones changes her velocity from 8 m/s to 11 m/s. Gail Devers changes hers from 7 m/s to 10 m/s. Who has the higher acceleration?

Accepted Answer

A)  Marion 
B)  Gail 
C)  acceleration equal for both 
D)  need more information 
A)  Marion 
B)  Gail 
C)  acceleration equal for both 
D)  need more information

Question 8

The Greek letter Δ (delta) is used to represent what?

Accepted Answer

A)  time 
B)  displacement 
C)  distance 
D)  change in 
A)  time 
B)  displacement 
C)  distance 
D)  change in

Question 9

What factor(s) distinguishes elite cross-country skiers from non-elite performers?

Accepted Answer

A)  stride or cycle length 
B)  stride or cycle frequency 
C)  both A & B 
D)  none of the above 
A)  stride or cycle length 
B)  stride or cycle frequency 
C)  both A & B 
D)  none of the above

Question 10

Which of the following statements is true regarding objects projected from the same level as they land?

Accepted Answer

A)  time up and time down are equal 
B)  angle of decent is equal to angle of takeoff 
C)  both A & B 
D)  all of the above 
A)  time up and time down are equal 
B)  angle of decent is equal to angle of takeoff 
C)  both A & B 
D)  all of the above

Question 11

A runner moving at a velocity of 6 m/s increases the velocity in a 2 s time interval to a rate of 10 m/s. What is the rate of acceleration?

Accepted Answer

A)  4 m/s2 
B)  4 m/s 
C)  2 m/s2 
D)  -2 m/s2 
A)  4 m/s2 
B)  4 m/s 
C)  2 m/s2 
D)  -2 m/s2

Question 12

Why does running downhill tend to increase running speed?

Accepted Answer

A)  increased stride length 
B)  increased stride frequency 
C)  both A and B 
D)  none of the above 
A)  increased stride length 
B)  increased stride frequency 
C)  both A and B 
D)  none of the above

Question 13

The form, pattern, or sequencing of movement with respect to time defines ___________________.

Accepted Answer

The answer of The form, pattern, or sequencing of movement...

Question 14

The negative sign in front of the acceleration due to gravity (-9.81 m/s2) can mean which of the following?

Accepted Answer

A)  the projectile is traveling down and speeding up (negative direction) 
B)  the projectile is traveling up and slowing down (negative acceleration) 
C)  both A and B 
D)  none of the above 
A)  the projectile is traveling down and speeding up (negative direction) 
B)  the projectile is traveling up and slowing down (negative acceleration) 
C)  both A and B 
D)  none of the above

Question 15

Linear distance traveled per unit of time describes what?

Accepted Answer

A)  displacement 
B)  velocity 
C)  acceleration 
D)  speed 
A)  displacement 
B)  velocity 
C)  acceleration 
D)  speed

Question 16

At the apex of the trajectory of a projectile, vertical velocity is at its maximum.

Accepted Answer

A) True 
 B)False

Question 17

Provide 2 examples in sport or rehab where instantaneous velocity is more important than average velocity and 2 examples where average velocity is more important. Provide rationale.

Accepted Answer

Instantaneous velocity is more important

Question 18

When a long jump performance is analyzed, which of the following is likely to be of the most interest?

Accepted Answer

A)  the average velocity of the jumper during the run-up 
B)  the instantaneous velocity of the jumper at takeoff 
C)  the average velocity of the jumper during the flight 
D)  the instantaneous velocity of the jumper at landing 
A)  the average velocity of the jumper during the run-up 
B)  the instantaneous velocity of the jumper at takeoff 
C)  the average velocity of the jumper during the flight 
D)  the instantaneous velocity of the jumper at landing

Question 19

When final velocity is larger than initial velocity, the acceleration is what?

Accepted Answer

A)  zero 
B)  negative 
C)  positive 
D)  average 
A)  zero 
B)  negative 
C)  positive 
D)  average

Question 20

In sport, which measure is more important or relevant?

Accepted Answer

A)  distance 
B)  displacement 
C)  depends on the situation 
D)  none of the above are important 
A)  distance 
B)  displacement 
C)  depends on the situation 
D)  none of the above are important

Why do elite long jumpers have take-off angles far less than the optimal 45°?

What is the average velocity of a cyclist who covers 5 miles in 30 minutes?

Discuss the 3 mechanical factors that influence a projectile, including how a change in one will affect the others.

Which of the following represents horizontal acceleration of a projectile?

It takes a swimmer 1 hour to cross a lake that is 1/2 mile wide. What is true of the swimmer's acceleration?

In the formula v₂ = v₁, what is known about acceleration?

Marion Jones changes her velocity from 8 m/s to 11 m/s. Gail Devers changes hers from 7 m/s to 10 m/s. Who has the higher acceleration?

The Greek letter Δ (delta) is used to represent what?

What factor(s) distinguishes elite cross-country skiers from non-elite performers?

Which of the following statements is true regarding objects projected from the same level as they land?

A runner moving at a velocity of 6 m/s increases the velocity in a 2 s time interval to a rate of 10 m/s. What is the rate of acceleration?

Why does running downhill tend to increase running speed?

The form, pattern, or sequencing of movement with respect to time defines ___________________.

The negative sign in front of the acceleration due to gravity (-9.81 m/s²) can mean which of the following?

Linear distance traveled per unit of time describes what?

At the apex of the trajectory of a projectile, vertical velocity is at its maximum.

Provide 2 examples in sport or rehab where instantaneous velocity is more important than average velocity and 2 examples where average velocity is more important. Provide rationale.

When a long jump performance is analyzed, which of the following is likely to be of the most interest?

When final velocity is larger than initial velocity, the acceleration is what?

In sport, which measure is more important or relevant?

What Is Biomechanics

Kinematic Concepts for Analyzing Human Motion

Kinetic Concepts for Analyzing Human Motion

The Biomechanics of Human Bone Growth and Development

The Biomechanics of Human Skeletal Articulations

The Biomechanics of Human Skeletal Muscle

The Biomechanics of the Human Upper Extremity

The Biomechanics of the Human Lower Extremity

The Biomechanics of the Human Spine

Angular Kinematics of Human Movement

Linear Kinetics of Human Movement

Equilibrium and Human Movement

Angular Kinetics of Human Movement

Human Movement in a Fluid Medium

Filters

Exam 10: Linear Kinematics of Human Movement

Why do elite long jumpers have take-off angles far less than the optimal 45°?

What is the average velocity of a cyclist who covers 5 miles in 30 minutes?

Discuss the 3 mechanical factors that influence a projectile, including how a change in one will affect the others.

Which of the following represents horizontal acceleration of a projectile?

It takes a swimmer 1 hour to cross a lake that is 1/2 mile wide. What is true of the swimmer's acceleration?

In the formula v2 = v1, what is known about acceleration?

Marion Jones changes her velocity from 8 m/s to 11 m/s. Gail Devers changes hers from 7 m/s to 10 m/s. Who has the higher acceleration?

The Greek letter Δ (delta) is used to represent what?

What factor(s) distinguishes elite cross-country skiers from non-elite performers?

Which of the following statements is true regarding objects projected from the same level as they land?

A runner moving at a velocity of 6 m/s increases the velocity in a 2 s time interval to a rate of 10 m/s. What is the rate of acceleration?

Why does running downhill tend to increase running speed?

The form, pattern, or sequencing of movement with respect to time defines ___________________.

The negative sign in front of the acceleration due to gravity (-9.81 m/s2) can mean which of the following?

Linear distance traveled per unit of time describes what?

At the apex of the trajectory of a projectile, vertical velocity is at its maximum.

Provide 2 examples in sport or rehab where instantaneous velocity is more important than average velocity and 2 examples where average velocity is more important. Provide rationale.

When a long jump performance is analyzed, which of the following is likely to be of the most interest?

When final velocity is larger than initial velocity, the acceleration is what?

In sport, which measure is more important or relevant?

What Is Biomechanics

Kinematic Concepts for Analyzing Human Motion

Kinetic Concepts for Analyzing Human Motion

The Biomechanics of Human Bone Growth and Development

The Biomechanics of Human Skeletal Articulations

The Biomechanics of Human Skeletal Muscle

The Biomechanics of the Human Upper Extremity

The Biomechanics of the Human Lower Extremity

The Biomechanics of the Human Spine

Angular Kinematics of Human Movement

Linear Kinetics of Human Movement

Equilibrium and Human Movement

Angular Kinetics of Human Movement

Human Movement in a Fluid Medium

Filters

In the formula v₂ = v₁, what is known about acceleration?

The negative sign in front of the acceleration due to gravity (-9.81 m/s²) can mean which of the following?