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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
second/meter
B
meter
C
meter * second
D
meter/second
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, vector
B
scalar, vector, scalar
C
vector, scalar, scalar
D
scalar, scalar, vector
3) The magnitude of the gravitational force acting on an object is
A
weight
B
inertia
C
mass
D
frictional force
4) If a nonzero net force is acting on an object, then the object is definitely
A
losing mass
B
at rest
C
being accelerated
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
horizontal velocity
C
vertical velocity
D
directrix
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
2 J
C
0.5 J
D
0 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
fourth
B
first
C
second
D
third
8) Acceleration of defined as
A
the rate of change of displacement
B
the rate of change of velocity
C
a rate of displacemnt
D
the change in velocity
9) Which of the following is the cause of an acceleration?
A
inertia
B
velocity
C
speed
D
force
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
a space shuttle being launched
B
a jet lifting off a runway
C
a thrown baseball
D
an aluminum can dropped straight down into the recycling bin
12) Why do physicisits use models?
A
to describe all aspects of a phenomenon
B
to explain the basic features of complex phenomena
C
to describe all of reality
D
to explain the complex features of simple phenomena
13) In which of the following sentences is work used in the everyday sense of the word?
A
Work is a physical quantity
B
Lifting a heavy bucket involves doing work on the bucket
C
Sam and Rachel worked hard pushing the car
D
the force of friction usually does negative work
14) A measure of the quantity of matter is
A
density
B
force
C
mass
D
weight
15) In the steps of the scientific method, what is the next step after formulating and objectively testing hypotheses?
A
conducting experiments
B
stating conclusion
C
interpreting results
D
making observations and collecting data
16) Which of the following situations represents a negative displacment? (Assume positive is measured upwards)
A
A cat jumps from the ground onto a limb
B
A cat jumps from a lower tree limb to a higher 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
parabola
B
hyperbola
C
wavy line
D
no predictable path
18) Which of the followin gline segments on a position vs. time graph is physically impossible?
A
straight line that slopes to the left
B
horizontal line
C
vertical line
D
straight line sloping to the right
19) Which would fall with greater acceleration in a vacuum- a leaf or a stone?
A
leaf
B
cannot determine
C
stone
D
same rate
20) A hammer drives a nail into a piece of wood. Identify an action-reaction pair
A
The hammer exerts a force on the nail; the wood exerts a force on the nail
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 hammer exerts a force on the wood
D
The nail exerts a force on the hammer; the hammer exets a force on the wood
*select an answer for all questions
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