PHYS 165 Module 5 Exam Questions and Answers Already Passed
What is the product of a force and the time interval over which it acts? - Answers Impulse (J)
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 product of an objects mass and velocity called - Answers Momentum (kgm/s)
What is the symbol for momentum - Answers Kgm/s
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 magnitude of the force exerted on the egg upon impact with the sidewalk
during all trials is the same 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 greater than the change in momentum of the system. - Answers False (its equal)
In what kind of system is it BEST to use the Impulse-Momentum Theorem?
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 an open system only
In which of the following types of collisions can momentum be conserved, as long as the
system is closed?
, a) Elastic
b) Inelastic
c) Perfectly Inelastic
d) All the above - Answers *a) Elastic*
b) Inelastic
c) Perfectly Inelastic
d) All the above
In which of the following types of collisions do object stick together after the collision and move
together?
a) Elastic
b) Inelastic
c) Perfectly Inelastic
d) All of the above - Answers a) Elastic
b) Inelastic
*c) Perfectly Inelastic*
d) All of the above
In order to open a jar, a torque must be applied to the lid. Which of the following will NOT
increase the amount of torque applied to the lid?
a) Increasing the amount of force applied
b) Putting a towel on the lid, which increases the torque arm
c) Applying the force along the tangent of the lid
d) applying the force perpendicular to the tangent - Answers a) Increasing the amount of force
applied
b) Putting a towel on the lid, which increases the torque arm
*c) Applying the force along the tangent of the lid*
d) applying the force perpendicular to the tangent
Olympic athletes can propel a 7.260-kg shot put at speeds over 10.24 m/s. What is the
What is the product of a force and the time interval over which it acts? - Answers Impulse (J)
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 product of an objects mass and velocity called - Answers Momentum (kgm/s)
What is the symbol for momentum - Answers Kgm/s
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 magnitude of the force exerted on the egg upon impact with the sidewalk
during all trials is the same 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 greater than the change in momentum of the system. - Answers False (its equal)
In what kind of system is it BEST to use the Impulse-Momentum Theorem?
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 an open system only
In which of the following types of collisions can momentum be conserved, as long as the
system is closed?
, a) Elastic
b) Inelastic
c) Perfectly Inelastic
d) All the above - Answers *a) Elastic*
b) Inelastic
c) Perfectly Inelastic
d) All the above
In which of the following types of collisions do object stick together after the collision and move
together?
a) Elastic
b) Inelastic
c) Perfectly Inelastic
d) All of the above - Answers a) Elastic
b) Inelastic
*c) Perfectly Inelastic*
d) All of the above
In order to open a jar, a torque must be applied to the lid. Which of the following will NOT
increase the amount of torque applied to the lid?
a) Increasing the amount of force applied
b) Putting a towel on the lid, which increases the torque arm
c) Applying the force along the tangent of the lid
d) applying the force perpendicular to the tangent - Answers a) Increasing the amount of force
applied
b) Putting a towel on the lid, which increases the torque arm
*c) Applying the force along the tangent of the lid*
d) applying the force perpendicular to the tangent
Olympic athletes can propel a 7.260-kg shot put at speeds over 10.24 m/s. What is the
