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Physics Midterm Review
Test Description: Review
Instructions: Answer all questions to get your test result.
1) What is the SI unit for velocity?
A
meter
B
meter/second
C
meter * second
D
second/meter
2) Identify the following quantities as scalar or vector, the mass of an object, the number of leaves on a tree, wind velocity
A
vector, scalar, scalar
B
scalar, vector, scalar
C
vector, scalar, vector
D
scalar, scalar, vector
3) The magnitude of the gravitational force acting on an object is
A
mass
B
weight
C
inertia
D
frictional force
4) If a nonzero net force is acting on an object, then the object is definitely
A
at rest
B
being accelerated
C
losing mass
D
moving with a constant velocity
5) Which of the following is the motion of objects moving in two dimensions under the influence of gravity?
A
projectile motion
B
vertical velocity
C
directrix
D
horizontal velocity
6) A child moving at constant velocity carries a 2 N ice-cream cone 1 m across a level surface. What is the net work done on the ice-cream cone?
A
20 J
B
0 J
C
0.5 J
D
2 J
7) The statement by Newton that for every action there is an equal but opposite reaction is which of his laws of motion?
A
first
B
third
C
second
D
fourth
8) Acceleration of defined as
A
the rate of change of displacement
B
the change in velocity
C
the rate of change of velocity
D
a rate of displacemnt
9) Which of the following is the cause of an acceleration?
A
velocity
B
speed
C
force
D
inertia
10) The length of a force vector represents the
A
magnitude of the force
B
type of force
C
direction of the force
D
cause of the force
11) Which of the following is an example of projectile motion?
A
an aluminum can dropped straight down into the recycling bin
B
a space shuttle being launched
C
a jet lifting off a runway
D
a thrown baseball
12) Why do physicisits use models?
A
to explain the complex features of simple phenomena
B
to describe all aspects of a phenomenon
C
to explain the basic features of complex phenomena
D
to describe all of reality
13) In which of the following sentences is work used in the everyday sense of the word?
A
Work is a physical quantity
B
Sam and Rachel worked hard pushing the car
C
the force of friction usually does negative work
D
Lifting a heavy bucket involves doing work on the bucket
14) A measure of the quantity of matter is
A
weight
B
density
C
mass
D
force
15) In the steps of the scientific method, what is the next step after formulating and objectively testing hypotheses?
A
stating conclusion
B
making observations and collecting data
C
interpreting results
D
conducting experiments
16) Which of the following situations represents a negative displacment? (Assume positive is measured upwards)
A
A cat jumps from a lower tree limb to a higher limb
B
A cat jumps from the ground onto a limb
C
A cat stands on a tree limb
D
A cat jumps from a tree limb to the ground
17) What is the path of a projectile in (in the absence of friction)?
A
no predictable path
B
wavy line
C
hyperbola
D
parabola
18) Which of the followin gline segments on a position vs. time graph is physically impossible?
A
straight line sloping to the right
B
vertical line
C
horizontal line
D
straight line that slopes to the left
19) Which would fall with greater acceleration in a vacuum- a leaf or a stone?
A
cannot determine
B
leaf
C
same rate
D
stone
20) A hammer drives a nail into a piece of wood. Identify an action-reaction pair
A
The nail exerts a force on the hammer; the hammer exets a force on the wood
B
The hammer exerts a force on the nail; the nail exerts a force on the hammer
C
The hammer exerts a force on the nail; the wood exerts a force on the nail
D
The hammer exerts a force on the nail; the hammer exerts a force on the wood
*select an answer for all questions
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