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

Question 2

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 C

Question 3

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 C

Question 4

If the velocity of a sailboat changes from 4 m/s to 2 m/s over a period of time,what is true of the sailboat's acceleration?

Accepted Answer

A) it is positive 
B) it is negative 
C) it is equal to zero 
D) it is equal to 2 knots/hr 
A) it is positive 
B) it is negative 
C) it is equal to zero 
D) it is equal to 2 knots/hr

Question 5

Choose the term that describes the flight path of a projectile.

Accepted Answer

A) projection speed 
B) range 
C) relative projection height 
D) trajectory 
A) projection speed 
B) range 
C) relative projection height 
D) trajectory

Question 6

Choose the term that describes the rate of change in location.

Accepted Answer

A) initial velocity 
B) linear acceleration 
C) linear displacement 
D) linear velocity 
A) initial velocity 
B) linear acceleration 
C) linear displacement 
D) linear velocity

Question 7

A ________ is a body in free fall subject only to the forces of ________ and ________ ________.

Accepted Answer

projectile

Question 8

Which of the following is/are scalar quantity(ies)?

Accepted Answer

A) distance 
B) speed 
C) displacement 
D) both distance and speed 
A) distance 
B) speed 
C) displacement 
D) both distance and speed

Question 9

In the absence of air resistance,the horizontal acceleration of a projectile is always equal to ________.

Accepted Answer

The answer of In the absence of air resistance,the horizontal...

Question 10

Choose the term that describes the highest point in the trajectory of a projectile.

Accepted Answer

A) angle of projection 
B) apex 
C) average 
D) initial velocity 
A) angle of projection 
B) apex 
C) average 
D) initial velocity

Question 11

If acceleration is constant and positive,velocity is what?

Accepted Answer

A) zero 
B) increasing 
C) decreasing 
D) need more information 
A) zero 
B) increasing 
C) decreasing 
D) need more information

Question 12

In which track event is distance equal to displacement?

Accepted Answer

A) 400 m dash 
B) 200 m dash 
C) 100 m dash 
D) 5K road race where starting line = finish line 
A) 400 m dash 
B) 200 m dash 
C) 100 m dash 
D) 5K road race where starting line = finish line

Question 13

A ball is tossed vertically upward from a height of 2 m with an initial velocity of 10 m/s. Just before the ball hits the ground,its velocity will be what?

Accepted Answer

A) 10 m/s 
B) less than 10 m/s 
C) greater than 10 m/s 
D) not possible to predict 
A) 10 m/s 
B) less than 10 m/s 
C) greater than 10 m/s 
D) not possible to predict

Question 14

Which of the following affects the time that a horizontally projected object remains in the air?

Accepted Answer

A) weight of projectile 
B) mass of projectile 
C) projection height 
D) all of these answers are correct 
A) weight of projectile 
B) mass of projectile 
C) projection height 
D) all of these answers are correct

Question 15

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 16

If air resistance is disregarded,the horizontal component of a projectile is constant.

Accepted Answer

A) True 
 B)False

Question 17

A runner completes 1 full lap around a 400 meter track. What is her displacement?

Accepted Answer

A) 400 meters 
B) 400 meters × 2π 
C) zero 
D) need more information 
A) 400 meters 
B) 400 meters × 2π 
C) zero 
D) need more information

Question 18

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 19

In sport,which measure is more important or relevant?

Accepted Answer

A) distance 
B) displacement 
C) depends on the situation 
D) none of these answers is correct 
A) distance 
B) displacement 
C) depends on the situation 
D) none of these answers is correct

Question 20

Once a projectile is airborne,it is affected by which of the following?

Accepted Answer

A) gravity 
B) air resistance 
C) release velocity 
D) both gravity and air resistance 
E) all of these answers are correct 
A) gravity 
B) air resistance 
C) release velocity 
D) both gravity and air resistance 
E) all of these answers are correct

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

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?

Which of the following represents horizontal acceleration of a projectile?

If the velocity of a sailboat changes from 4 m/s to 2 m/s over a period of time,what is true of the sailboat's acceleration?

Choose the term that describes the flight path of a projectile.

Choose the term that describes the rate of change in location.

A is a body in free fall subject only to the forces of and .

Which of the following is/are scalar quantity(ies)?

In the absence of air resistance,the horizontal acceleration of a projectile is always equal to ________.

Choose the term that describes the highest point in the trajectory of a projectile.

If acceleration is constant and positive,velocity is what?

In which track event is distance equal to displacement?

A ball is tossed vertically upward from a height of 2 m with an initial velocity of 10 m/s. Just before the ball hits the ground,its velocity will be what?

Which of the following affects the time that a horizontally projected object remains in the air?

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

If air resistance is disregarded,the horizontal component of a projectile is constant.

A runner completes 1 full lap around a 400 meter track. What is her displacement?

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 sport,which measure is more important or relevant?

Once a projectile is airborne,it is affected by which of the following?

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°?

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?

Which of the following represents horizontal acceleration of a projectile?

If the velocity of a sailboat changes from 4 m/s to 2 m/s over a period of time,what is true of the sailboat's acceleration?

Choose the term that describes the flight path of a projectile.

Choose the term that describes the rate of change in location.

A ________ is a body in free fall subject only to the forces of ________ and ________ ________.

Which of the following is/are scalar quantity(ies)?

In the absence of air resistance,the horizontal acceleration of a projectile is always equal to ________.

Choose the term that describes the highest point in the trajectory of a projectile.

If acceleration is constant and positive,velocity is what?

In which track event is distance equal to displacement?

A ball is tossed vertically upward from a height of 2 m with an initial velocity of 10 m/s. Just before the ball hits the ground,its velocity will be what?

Which of the following affects the time that a horizontally projected object remains in the air?

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

If air resistance is disregarded,the horizontal component of a projectile is constant.

A runner completes 1 full lap around a 400 meter track. What is her displacement?

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 sport,which measure is more important or relevant?

Once a projectile is airborne,it is affected by which of the following?

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

A is a body in free fall subject only to the forces of and .