PHYSICS 165 MODULE 4 EXAM
UPDATED QUESTIONS AND CORRECT
ANSWERS.
Which TWO of the following will NOT affect the amount of work you do in lifting a book onto a
shelf? - ANS 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 - ANS D) Work
What is the unit of both energy and work? - ANS JOULES
True or False: When you hold a dumbbell in place 3 feet off the ground, work is being done.
A) True
B) False - ANS B) False
Which of the following could be a unit for power?
A) Candelas
B) Horsepower
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, C) Amperes
D) Volts - ANS B) Horsepower (and Watts)
Which of the following changes will maximize the work done by a force? - ANS Apply the
force in the same direction as the displacement
How can a waiter apply a force to a tray and NOT do any work on it? - ANS 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?
- ANS 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 - ANS A) Positive work
Explain why that force does no work. - ANS 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. - ANS 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? - ANS 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
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UPDATED QUESTIONS AND CORRECT
ANSWERS.
Which TWO of the following will NOT affect the amount of work you do in lifting a book onto a
shelf? - ANS 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 - ANS D) Work
What is the unit of both energy and work? - ANS JOULES
True or False: When you hold a dumbbell in place 3 feet off the ground, work is being done.
A) True
B) False - ANS B) False
Which of the following could be a unit for power?
A) Candelas
B) Horsepower
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, C) Amperes
D) Volts - ANS B) Horsepower (and Watts)
Which of the following changes will maximize the work done by a force? - ANS Apply the
force in the same direction as the displacement
How can a waiter apply a force to a tray and NOT do any work on it? - ANS 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?
- ANS 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 - ANS A) Positive work
Explain why that force does no work. - ANS 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. - ANS 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? - ANS 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
