Phys 165 Module 3 Exam
Study online at https://quizlet.com/_dg0qn0
1. What is the branch of classical mechanics concerned with the study of forces
and their effects on motion called?: 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: 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*
3. What is the unit for force?: 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: B) 2
5. What is the specific, immediate, identifiable cause of a force called?: Agent of Force
6. When a baseball player hits a home run, what is the agent of the force applied
to the ball?: The bat
7. What makes a field force different from a contact force when it comes to
agents and receivers of forces?: 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
B) Tension Force
C) Elastic Force
D) Field Force: A) Normal Force
9. he force that acts on an object to resist motion is known as ______________.
A) Normal
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B) Friction
C) Inertia
D) Contact: B) Friction
10. The resistive force that occurs when the two surfaces do slide across each
other is known as ____________________________.
A) Static Friction
B) Kinetic Friction: A) Static Friction: starting
*B) Kinetic Friction*: sliding
11. What is the definition of inertia?: Inertia is the property of an object which resists any change in
the object's motion
12. Law of Inertia?: An object at rest remains at rest and an object in motion stays in motion unless acted on by
a net outside force
13. Which of the following is a description of acceleration according to Newton's
Second Law of Motion? Acceleration _________.: 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
14. Law of Interaction?: For every action, there is an equal but opposite reaction
15. According to Newton's Third Law of Motion, what is the reaction to a ball
being kicked by a teenager?: The ball applies a force to the teenager's foot
16. True or False: In physics. The Weight and Mass of an object have the same
value.: False
17. What is the weight of a 1560 kg car?: W=mg
1560 x 9.80= 15,288
*15,290 N*
18. When a tugboat pulls a barge with a net force of 842,000 N,
what acceleration will the barge experience if it has a mass of 1,625,000 kg?: Use
f=ma revise a=Fnet/m
842,000/ 1,625,000 = 0.51815385
*0.518 m/s^2*
2/5
Study online at https://quizlet.com/_dg0qn0
1. What is the branch of classical mechanics concerned with the study of forces
and their effects on motion called?: 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: 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*
3. What is the unit for force?: 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: B) 2
5. What is the specific, immediate, identifiable cause of a force called?: Agent of Force
6. When a baseball player hits a home run, what is the agent of the force applied
to the ball?: The bat
7. What makes a field force different from a contact force when it comes to
agents and receivers of forces?: 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
B) Tension Force
C) Elastic Force
D) Field Force: A) Normal Force
9. he force that acts on an object to resist motion is known as ______________.
A) Normal
1/5
, Phys 165 Module 3 Exam
Study online at https://quizlet.com/_dg0qn0
B) Friction
C) Inertia
D) Contact: B) Friction
10. The resistive force that occurs when the two surfaces do slide across each
other is known as ____________________________.
A) Static Friction
B) Kinetic Friction: A) Static Friction: starting
*B) Kinetic Friction*: sliding
11. What is the definition of inertia?: Inertia is the property of an object which resists any change in
the object's motion
12. Law of Inertia?: An object at rest remains at rest and an object in motion stays in motion unless acted on by
a net outside force
13. Which of the following is a description of acceleration according to Newton's
Second Law of Motion? Acceleration _________.: 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
14. Law of Interaction?: For every action, there is an equal but opposite reaction
15. According to Newton's Third Law of Motion, what is the reaction to a ball
being kicked by a teenager?: The ball applies a force to the teenager's foot
16. True or False: In physics. The Weight and Mass of an object have the same
value.: False
17. What is the weight of a 1560 kg car?: W=mg
1560 x 9.80= 15,288
*15,290 N*
18. When a tugboat pulls a barge with a net force of 842,000 N,
what acceleration will the barge experience if it has a mass of 1,625,000 kg?: Use
f=ma revise a=Fnet/m
842,000/ 1,625,000 = 0.51815385
*0.518 m/s^2*
2/5
