PHYS 165 Module 3 Exam Questions and Answers Latest Update 2025-2026
What is the branch of classical mechanics concerned with the study of forces and their effects
on motion called? - Answers Dynamics
Which of the following is the BEST description of a force?
a) simply a push or a pull
b) an action exerted on an object which may change the object's state of rest or motion
c) something only found in sci-fi movies
d) A and B - Answers a) simply a push or a pull
b) an action exerted on an object which may change the object's state of rest or motion
c) something only found in sci-fi movies
*d) A and B*
What is the unit for force? - Answers Newtons
In a free body diagram of a box resting on the floor, how many forces would you draw?
A) 1
B) 2
C) 3
D) 4 - Answers B) 2
What is the specific, immediate, identifiable cause of a force called? - Answers Agent of Force
When a baseball player hits a home run, what is the agent of the force applied to the ball? -
Answers The bat
What makes a field force different from a contact force when it comes to agents and receivers
of forces? - Answers In field forces the agent and receiver of the force do not have to touch, but
in contact forces the agent and receiver of the force must touch
A force exerted from any surface (the agent) onto an object that is pressing against the given
surface is known as a(n) _______.
A) Normal Force
B) Tension Force
, C) Elastic Force
D) Field Force - Answers A) Normal Force
he force that acts on an object to resist motion is known as ______________.
A) Normal
B) Friction
C) Inertia
D) Contact - Answers B) Friction
The resistive force that occurs when the two surfaces do slide across each other is known as
____________________________.
A) Static Friction
B) Kinetic Friction - Answers A) Static Friction: starting
*B) Kinetic Friction*: sliding
What is the definition of inertia? - Answers Inertia is the property of an object which resists any
change in the object's motion
Law of Inertia? - Answers An object at rest remains at rest and an object in motion stays in
motion unless acted on by a net outside force
Which of the following is a description of acceleration according to Newton's Second Law of
Motion? Acceleration _________. - Answers Is directly proportional to the net force acting on the
system
Acceleration of an object is directly proportional to the net external force acting on an object
Acceleration of an object is inversely proportional to the mass of the object
Acceleration of the object is in the same direction as the net external force
Law of Interaction? - Answers For every action, there is an equal but opposite reaction
According to Newton's Third Law of Motion, what is the reaction to a ball being kicked by a
teenager? - Answers The ball applies a force to the teenager's foot
True or False: In physics. The Weight and Mass of an object have the same value. - Answers
False
What is the branch of classical mechanics concerned with the study of forces and their effects
on motion called? - Answers Dynamics
Which of the following is the BEST description of a force?
a) simply a push or a pull
b) an action exerted on an object which may change the object's state of rest or motion
c) something only found in sci-fi movies
d) A and B - Answers a) simply a push or a pull
b) an action exerted on an object which may change the object's state of rest or motion
c) something only found in sci-fi movies
*d) A and B*
What is the unit for force? - Answers Newtons
In a free body diagram of a box resting on the floor, how many forces would you draw?
A) 1
B) 2
C) 3
D) 4 - Answers B) 2
What is the specific, immediate, identifiable cause of a force called? - Answers Agent of Force
When a baseball player hits a home run, what is the agent of the force applied to the ball? -
Answers The bat
What makes a field force different from a contact force when it comes to agents and receivers
of forces? - Answers In field forces the agent and receiver of the force do not have to touch, but
in contact forces the agent and receiver of the force must touch
A force exerted from any surface (the agent) onto an object that is pressing against the given
surface is known as a(n) _______.
A) Normal Force
B) Tension Force
, C) Elastic Force
D) Field Force - Answers A) Normal Force
he force that acts on an object to resist motion is known as ______________.
A) Normal
B) Friction
C) Inertia
D) Contact - Answers B) Friction
The resistive force that occurs when the two surfaces do slide across each other is known as
____________________________.
A) Static Friction
B) Kinetic Friction - Answers A) Static Friction: starting
*B) Kinetic Friction*: sliding
What is the definition of inertia? - Answers Inertia is the property of an object which resists any
change in the object's motion
Law of Inertia? - Answers An object at rest remains at rest and an object in motion stays in
motion unless acted on by a net outside force
Which of the following is a description of acceleration according to Newton's Second Law of
Motion? Acceleration _________. - Answers Is directly proportional to the net force acting on the
system
Acceleration of an object is directly proportional to the net external force acting on an object
Acceleration of an object is inversely proportional to the mass of the object
Acceleration of the object is in the same direction as the net external force
Law of Interaction? - Answers For every action, there is an equal but opposite reaction
According to Newton's Third Law of Motion, what is the reaction to a ball being kicked by a
teenager? - Answers The ball applies a force to the teenager's foot
True or False: In physics. The Weight and Mass of an object have the same value. - Answers
False
