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Physics 165 Module 4 Exam Questions with
Answers (100% Correct Answers)
Which TWO of the following will NOT affect the amount of work you do in
lifting a book onto a shelf? Answer: The path that the book takes as you lift it to
the shelf, and the time it takes you to lift it to the shelf
What is the process of producing change in the environment called?
A) Energy
B) Force
C) Power
D) Work Answer: D) Work
What is the unit of both energy and work? Answer: JOULES
True or False: When you hold a dumbbell in place 3 feet off the ground, work
is being done.
A) True
B) False Answer: B) False
Which of the following could be a unit for power?
A) Candelas
B) Horsepower
C) Amperes
D) Volts Answer: B) Horsepower (and Watts)
Which of the following changes will maximize the work done by a force?
Answer: Apply the force in the same direction as the displacement
, 2
How can a waiter apply a force to a tray and NOT do any work on it? Answer:
Either apply the force in a direction that is perpendicular to the displacement,
have no displacement
When the energy of a system decreases, what type of work is most likely done
ON that system? Answer: zero work
When the energy of a system increases, what type of work is most likely done
ON that system?
A) Positive work
B) Negative work
C) Zero work
D) There is no relationship between work and energy Answer: A) Positive
work
Explain why that force does no work. Answer: Large amount of
GRAVITATIONAL FORCE and normal force, but no DISPLACEMENT, so
no work has been done
True or False: A football is kicked into the air. As it rises, its kinetic energy
decreases and its gravitational potential energy increases. Answer: true
If you wanted to make the kinetic energy of a thrown ball larger, which TWO
of the following changes would make the kinetic energy of the ball FOUR
times bigger? Answer: Make the mass of the ball four times bigger, and Double
the speed of the ball
Which of the following forces is NOT an example of a conservative force?
A) Gravity
B) Electric
C) Magnetic
Physics 165 Module 4 Exam Questions with
Answers (100% Correct Answers)
Which TWO of the following will NOT affect the amount of work you do in
lifting a book onto a shelf? Answer: The path that the book takes as you lift it to
the shelf, and the time it takes you to lift it to the shelf
What is the process of producing change in the environment called?
A) Energy
B) Force
C) Power
D) Work Answer: D) Work
What is the unit of both energy and work? Answer: JOULES
True or False: When you hold a dumbbell in place 3 feet off the ground, work
is being done.
A) True
B) False Answer: B) False
Which of the following could be a unit for power?
A) Candelas
B) Horsepower
C) Amperes
D) Volts Answer: B) Horsepower (and Watts)
Which of the following changes will maximize the work done by a force?
Answer: Apply the force in the same direction as the displacement
, 2
How can a waiter apply a force to a tray and NOT do any work on it? Answer:
Either apply the force in a direction that is perpendicular to the displacement,
have no displacement
When the energy of a system decreases, what type of work is most likely done
ON that system? Answer: zero work
When the energy of a system increases, what type of work is most likely done
ON that system?
A) Positive work
B) Negative work
C) Zero work
D) There is no relationship between work and energy Answer: A) Positive
work
Explain why that force does no work. Answer: Large amount of
GRAVITATIONAL FORCE and normal force, but no DISPLACEMENT, so
no work has been done
True or False: A football is kicked into the air. As it rises, its kinetic energy
decreases and its gravitational potential energy increases. Answer: true
If you wanted to make the kinetic energy of a thrown ball larger, which TWO
of the following changes would make the kinetic energy of the ball FOUR
times bigger? Answer: Make the mass of the ball four times bigger, and Double
the speed of the ball
Which of the following forces is NOT an example of a conservative force?
A) Gravity
B) Electric
C) Magnetic
