1
No force is necessary to
a. start an object moving.
b. stop an object from moving.
c. cause a change in the motion of an object.
d. keep an object doing what it is already doing.
2
The amount of sliding friction depends on the
a. weight of the moving object and the type of surface that the
object slides across.
b. density and volume of the object.
c. acceleration and mass of the object.
d. density and mass of the object.
3
Which of the following is not used to reduce friction?
a. wheels.
b. ball bearings.
c. oil.
d. rough surfaces.
4
Which of the following is not a fluid?
a. air.
b. sugar.
c. water.
d. oil.
5
When forces are balanced, the motion of the object
a. is decreased.
b. is increased.
c. does not change.
d. is completely stopped.
6
For every action, the reaction is
a. equal and in the same direction.
b. equal and opposite.
c. unequal and opposite.
d. unequal and in the same direction.
7
Near the surface of the Earth, the acceleration due to gravity is
9.8 m/sec/sec. After falling 6 sec, an object would have a velocity of
a. 3.8 m/sec.
b. 9.8 m/sec.
c. 15.8 m/sec.
d. 58.8 m/sec.
8
Motion when an unbalanced force acts on an object is described by
Newton's
a. first law of motion.
b. second law of motion.
c. third law of motion.
d. law of universal gravitation.
9
The weight of an object varies with the
a. pull of gravity.
b. volume of the object.
c. dimensions of the object.
d. speed of the object.
10
Newton's third law of motion describes
a. motion when a balanced force acts on an object.
b. motion when an unbalanced force acts on an object.
c. why forces act in pairs.
d. all aspects of an object's motion.
No force is necessary to
a. start an object moving.
b. stop an object from moving.
c. cause a change in the motion of an object.
d. keep an object doing what it is already doing.
2
The amount of sliding friction depends on the
a. weight of the moving object and the type of surface that the
object slides across.
b. density and volume of the object.
c. acceleration and mass of the object.
d. density and mass of the object.
3
Which of the following is not used to reduce friction?
a. wheels.
b. ball bearings.
c. oil.
d. rough surfaces.
4
Which of the following is not a fluid?
a. air.
b. sugar.
c. water.
d. oil.
5
When forces are balanced, the motion of the object
a. is decreased.
b. is increased.
c. does not change.
d. is completely stopped.
6
For every action, the reaction is
a. equal and in the same direction.
b. equal and opposite.
c. unequal and opposite.
d. unequal and in the same direction.
7
Near the surface of the Earth, the acceleration due to gravity is
9.8 m/sec/sec. After falling 6 sec, an object would have a velocity of
a. 3.8 m/sec.
b. 9.8 m/sec.
c. 15.8 m/sec.
d. 58.8 m/sec.
8
Motion when an unbalanced force acts on an object is described by
Newton's
a. first law of motion.
b. second law of motion.
c. third law of motion.
d. law of universal gravitation.
9
The weight of an object varies with the
a. pull of gravity.
b. volume of the object.
c. dimensions of the object.
d. speed of the object.
10
Newton's third law of motion describes
a. motion when a balanced force acts on an object.
b. motion when an unbalanced force acts on an object.
c. why forces act in pairs.
d. all aspects of an object's motion.
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Answers
1. d
2. a
3. d
4. b
5. c
6. b
7.d
8.b
9.a
10.c
1. d
2. a
3. d
4. b
5. c
6. b
7.d
8.b
9.a
10.c
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just a few?
1d
2a
3d
4b
5c
6b
7d
8c
9a
10 none of these. Third law: The mutual forces of action and reaction between two bodies are equal, opposite and collinear.
1d
2a
3d
4b
5c
6b
7d
8c
9a
10 none of these. Third law: The mutual forces of action and reaction between two bodies are equal, opposite and collinear.
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1) D.
2) A.
3) D.
4) B.
5) D.
6) B.
7) B.
8) A.
9) A.
10) C.
2) A.
3) D.
4) B.
5) D.
6) B.
7) B.
8) A.
9) A.
10) C.