Download SCM 542 Assignment 1 Due July 12, 2002 Each Question is worth

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Transcript
SCM 542 Assignment 1
Each Question is worth 0.4 points
*
Due July 12, 2002
1. Which of the following forces is an example of a force which acts at a distance (field force)?
a)
b)
c)
d)
gravitational
magnetic
electrical
all of the above
Answer:
2. Which of the following statements expresses a principle which was initially stated by Galileo and was
later incorporated into Newton's laws of motion?
a)
b)
c)
d)
An object's acceleration is inversely proportional to its mass.
For every action there is an equal but opposite reaction.
The natural condition for a moving object is to remain in motion.
The natural condition for a moving object is to come to rest.
Answer:
3. If we know an object is moving at a constant velocity, we must assume:
a)
b)
c)
d)
There is no net force acting on the object.
There are no forces acting on the object.
The object is accelerating.
The object is losing mass.
Answer:
4. If an object is at rest, there are no forces axcting on it.
a) True
b) False
Answer:
5. Mass
a)
b)
c)
d)
Answer:
is a measure of inertia.
can have the units of kilograms.
is neither A nor B.
is both A and B.