PHYS 165 MODULE 3 EXAM
1. What is the branch of classical mechanics concerned with the study of forces
and their effects on motion called?
Answer Dynamics
2. 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
Answer a) simply a push or a pull
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,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*
3. What is the unit for force?
Answer Newtons
4. 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
Answer B) 2
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, 5. What is the specific, immediate, identifiable cause of a force called?
Answer Agent of Force
6. When a baseball player hits a home run, what is the agent of the force applied
to the ball?
Answer The bat
7. What makes a field force different from a contact force when it comes to
agents and receivers of forces?
Answer 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
8. 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
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1. What is the branch of classical mechanics concerned with the study of forces
and their effects on motion called?
Answer Dynamics
2. 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
Answer a) simply a push or a pull
1/
16
,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*
3. What is the unit for force?
Answer Newtons
4. 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
Answer B) 2
2/
16
, 5. What is the specific, immediate, identifiable cause of a force called?
Answer Agent of Force
6. When a baseball player hits a home run, what is the agent of the force applied
to the ball?
Answer The bat
7. What makes a field force different from a contact force when it comes to
agents and receivers of forces?
Answer 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
8. 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
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16
