Question 1

A skater gliding on ice will continue to move in the same direction and with the same speed (in the absence of the action of additional forces) . This exemplifies which of the following laws?

Accepted Answer

A)  Newton's first law of inertia
B)  Newton's second law of acceleration
C)  Newton's third law of action/reaction
D)  Newton's law of gravitational forceE) A) and C)
F) A) and B)

Question 2

Which of the following affects the coefficient of restitution between a tennis racket and tennis ball?

Accepted Answer

A)  how long the ball has been out of the can
B)  how many times the ball has been hit
C)  tightness of the grip
D)  both how long the ball has been out of the can and how many times the ball has been hit
E)  all of these answers are correctF) A) and D)
G) A) and E) E

Question 3

If an object of constant mass travels with a constant velocity,which statement is true?

Accepted Answer

A)  momentum is constant
B)  acceleration is 0
C)  both momentum is constant and acceleration is 0
D)  none of these answers is correctE) None of the above
F) A) and B)

Question 4

Elite sprinters display greater impulse against the starting blocks than sub-elite sprinters.

Accepted Answer

A) True 
 B)False

Question 5

New blade designs have resulted in extremely low values for the kinetic friction coefficients of ice hockey skates on ice.

Accepted Answer

A) True 
 B)False  True

Question 6

The principle of conservation of momentum restates which of Newton's laws?

Accepted Answer

A)  inertia
B)  acceleration
C)  action/reaction
D)  gravitationE) C) and D)
F) A) and B)

Question 7

An impact resulting in the total loss of velocity would be called a perfectly ________ impact.

Accepted Answer

plastic

Question 8

Which quantity is not a force?

Accepted Answer

A)  friction
B)  mass
C)  weight
D)  gravityE) B) and D)
F) A) and B)

Question 9

Which of the following relationships is correct?

Accepted Answer

A)  m = F / a
B)  F = m / a
C)  a = m / F
D)  none of these answers is correctE) None of the above
F) A) and B)

Question 10

Choose the term that describes the capacity to do work by virtue of a deformed body's return to its original shape.

Accepted Answer

A)  potential energy
B)  power
C)  strain energy
D)  kinetic energyE) None of the above
F) B) and C)

Question 11

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

Accepted Answer

A)  friction and weight
B)  work and energy
C)  both friction and weight and work and energy
D)  neither friction and weight nor work and energyE) B) and D)
F) B) and C)

Question 12

Choose the term that describes the constant-magnitude friction generated between two surfaces in contact during motion.

Accepted Answer

A)  friction
B)  coefficient of friction
C)  maximum static friction
D)  kinetic frictionE) B) and C)
F) None of the above

Question 13

Which of the following statements is true about the relationship between impact and impulse?

Accepted Answer

A)  impact is always greater than impulse
B)  impulse is always greater than impact
C)  impacts generate impulses
D)  impulses generate impactsE) None of the above
F) A) and B)

Question 14

A number that serves as an index of elasticity for colliding bodies is called coefficient of ________.

Accepted Answer

The answer of A number that serves as an index...

Question 15

When two bodies collide head-on and then continue to travel collectively in the original direction of motion of one of the bodies,what factor determines the direction of collective motion after the collision?

Accepted Answer

A)  the relative moments of the two bodies
B)  the relative masses of the two bodies
C)  the relative acceleration of the two bodies
D)  the relative weights of the two bodiesE) None of the above
F) All of the above

Question 16

What happens to momentum when an impulse acts on a system?

Accepted Answer

A)  momentum is conserved
B)  momentum is changed
C)  impulse does not affect momentum
D)  all of these answers are correctE) B) and D)
F) A) and B)

Question 17

Which of the following is/are true statement(s) regarding the law of gravitation?

Accepted Answer

A)  All bodies are attracted to one another with a force proportional to the product of their masses.
B)  All bodies are attracted to one another with a force inversely proportional to the square of the distance between them.
C)  The law of gravitation ceases to exist outside the earth's atmosphere.
D)  Both all bodies are attracted to one another with a force proportional to the product of their masses and all bodies are attracted to one another with a force inversely proportional to the square of the distance between them.
E)  All of these answers are correct.F) B) and C)
G) A) and B)

Question 18

Which of the following mechanical quantities is evident in explosive track and field events,such as the long jump and the shot put?

Accepted Answer

A)  kinetic energy
B)  potential energy
C)  mechanical work
D)  mechanical powerE) B) and D)
F) B) and C)

Question 19

The higher the jump,the "harder" the landing. This statement reflects which of the following laws?

Accepted Answer

A)  the law of inertia
B)  the law of momentum
C)  the law of torque
D)  the law of action-reactionE) A) and B)
F) None of the above

Question 20

A motionless object sitting on a motionless surface,with no horizontal force application,has no friction.

Accepted Answer

A) True 
 B)False

Exam 12: Linear Kinetics of Human Movement

A skater gliding on ice will continue to move in the same direction and with the same speed (in the absence of the action of additional forces) . This exemplifies which of the following laws?

Correct AnswerverifiedShow Answer

Which of the following affects the coefficient of restitution between a tennis racket and tennis ball?

Correct AnswerverifiedE

If an object of constant mass travels with a constant velocity,which statement is true?

Correct AnswerverifiedShow Answer

Elite sprinters display greater impulse against the starting blocks than sub-elite sprinters.

Correct AnswerverifiedShow Answer

New blade designs have resulted in extremely low values for the kinetic friction coefficients of ice hockey skates on ice.

Correct AnswerverifiedTrue

The principle of conservation of momentum restates which of Newton's laws?

Correct AnswerverifiedShow Answer

An impact resulting in the total loss of velocity would be called a perfectly ________ impact.

Correct Answerverifiedplastic

Which quantity is not a force?

Correct AnswerverifiedShow Answer

Which of the following relationships is correct?

Correct AnswerverifiedShow Answer

Choose the term that describes the capacity to do work by virtue of a deformed body's return to its original shape.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Choose the term that describes the constant-magnitude friction generated between two surfaces in contact during motion.

Correct AnswerverifiedShow Answer

Which of the following statements is true about the relationship between impact and impulse?

Correct AnswerverifiedShow Answer

A number that serves as an index of elasticity for colliding bodies is called coefficient of ________.

Correct AnswerverifiedShow Answer

When two bodies collide head-on and then continue to travel collectively in the original direction of motion of one of the bodies,what factor determines the direction of collective motion after the collision?

Correct AnswerverifiedShow Answer

What happens to momentum when an impulse acts on a system?

Correct AnswerverifiedShow Answer

Which of the following is/are true statement(s) regarding the law of gravitation?

Correct AnswerverifiedShow Answer

Which of the following mechanical quantities is evident in explosive track and field events,such as the long jump and the shot put?

Correct AnswerverifiedShow Answer

The higher the jump,the "harder" the landing. This statement reflects which of the following laws?

Correct AnswerverifiedShow Answer

A motionless object sitting on a motionless surface,with no horizontal force application,has no friction.

Correct AnswerverifiedShow Answer

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E

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True

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plastic

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