PHYS 165 Module 6 Exam Questions and Answers Already Passed
What do we call motion that is repeated as a function of time?
A) Accelerated Motion
B) Periodic Motion
C) Free Fall Motion
D) Projectile Motion - Answers B) Periodic Motion
On a graph of force versus time interval, how can you find the amount of impulse exerted by the
force?
A) Find the maximum y value
B) Find the maximum x value
C) Find the area under the curve
d) None of the above - Answers C) Find the area under the curve
What is the symbol for Impulse?
A) F
B) J
C) M
D) P - Answers B) J
During a physics experiment, a raw egg is dropped from a two-story building encased in
materials that cushion the impact with the concrete sidewalk below. This process is repeated
with different materials encasing the egg. Successful trials prevent the egg from breaking upon
impact with the sidewalk. Assume that in all trials the mass of the apparatus and the speed
upon impact are the same. Answer the following questions about this experiment.
True or False: The momentum of the apparatus upon impact with the sidewalk is the same in all
trials regardless of if the egg breaks or not. - Answers True
True or False: The Impulse-Momentum Theorem states that the net impulse exerted on a
system is less than the change in momentum of the system.
True
False - Answers False
, In what kind of system is it BEST to use the Law of Conservation of Momentum?
A) In a closed system only
B) In an open system only
C) In any open or closed system
D) There are no systems in which the Law of Conservation of Momentum applies - Answers A)
In a closed system only
In which of the following types of collisions can *kinetic energy be conserved*, as long as the
system is closed?
A) Elastic
B) Inelastic
C) Perfectly Inelastic
D) All of the above - Answers A) Elastic
In which of the following types of collisions do object stick together after the collision and move
together?
Elastic
Inelastic
Correct! Perfectly Inelastic
All of the above - Answers
Of the following objects in motion, which one is exhibiting simple harmonic motion? - Answers
Pendulum swinging back and forth
For an object in simple harmonic motion, there is a restoring force that is directly proportional to
the object's distance from equilibrium
True or False: A scientist wants to make the period of a pendulum smaller. One way to
accomplish this would be to increase the acceleration due to gravity. - Answers True
True or False: A scientist is experimenting with an object bouncing on a spring. In order to
decrease the period of the object bouncing on the spring, the scientist could do either of the
following:
increase the mass of the object or decrease the spring constant of the spring - Answers False
True or False: Electromagnetic waves need a medium to disturb. - Answers False
What do we call motion that is repeated as a function of time?
A) Accelerated Motion
B) Periodic Motion
C) Free Fall Motion
D) Projectile Motion - Answers B) Periodic Motion
On a graph of force versus time interval, how can you find the amount of impulse exerted by the
force?
A) Find the maximum y value
B) Find the maximum x value
C) Find the area under the curve
d) None of the above - Answers C) Find the area under the curve
What is the symbol for Impulse?
A) F
B) J
C) M
D) P - Answers B) J
During a physics experiment, a raw egg is dropped from a two-story building encased in
materials that cushion the impact with the concrete sidewalk below. This process is repeated
with different materials encasing the egg. Successful trials prevent the egg from breaking upon
impact with the sidewalk. Assume that in all trials the mass of the apparatus and the speed
upon impact are the same. Answer the following questions about this experiment.
True or False: The momentum of the apparatus upon impact with the sidewalk is the same in all
trials regardless of if the egg breaks or not. - Answers True
True or False: The Impulse-Momentum Theorem states that the net impulse exerted on a
system is less than the change in momentum of the system.
True
False - Answers False
, In what kind of system is it BEST to use the Law of Conservation of Momentum?
A) In a closed system only
B) In an open system only
C) In any open or closed system
D) There are no systems in which the Law of Conservation of Momentum applies - Answers A)
In a closed system only
In which of the following types of collisions can *kinetic energy be conserved*, as long as the
system is closed?
A) Elastic
B) Inelastic
C) Perfectly Inelastic
D) All of the above - Answers A) Elastic
In which of the following types of collisions do object stick together after the collision and move
together?
Elastic
Inelastic
Correct! Perfectly Inelastic
All of the above - Answers
Of the following objects in motion, which one is exhibiting simple harmonic motion? - Answers
Pendulum swinging back and forth
For an object in simple harmonic motion, there is a restoring force that is directly proportional to
the object's distance from equilibrium
True or False: A scientist wants to make the period of a pendulum smaller. One way to
accomplish this would be to increase the acceleration due to gravity. - Answers True
True or False: A scientist is experimenting with an object bouncing on a spring. In order to
decrease the period of the object bouncing on the spring, the scientist could do either of the
following:
increase the mass of the object or decrease the spring constant of the spring - Answers False
True or False: Electromagnetic waves need a medium to disturb. - Answers False
