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Exam Review I
Name___________________________________
TRUE/FALSE.
Write 'T' if the statement is true and 'F' if the statement is false.
1) Force is a vector quantity.
1)
2) Vector quantities are represented in terms of their magnitude and direction.
T
2)
3)
If
A
+
B
=
0, then the vectors
A
and
B
have equal magnitudes and are directed in the same
direction.
F
3)
4) The force of static friction between two surfaces is independent of the area of contact between the
surfaces. T
4)
5) Free fall is the motion of an object subject only to the influence of gravity. T
5)
6) An object moving along a curved path with constant speed does not have a net force acting on it. F
6)
7)
If
A
+
B
=
C
and A+B
=
C, then the vectors
A
and
B
are oriented perpendicular relative to one
other.
F
7)
8) The horizontal component of the velocity of a projectile remains constant during the entire
trajectory of the projectile.
T
8)
9) The mass of an object is fixed, but its weight varies from location to location. T
9)
10) A ball is thrown at an angle of
Ό
above the horizontal. If there is no acceleration due to gravity the
ball will follow a straight

line path.
T
10)
11) An object thrown downward does not experience free fall. F
11)
MULTIPLE CHOICE.
Choose the one alternative that best completes the statement or answers the question.
12)
If a vector
A
has components
A
x
>
0, and
A
y
>
0, then the angle that this vector makes with the
positive
x

axis must be in the range
12)
A) 0° to 90°.XXX
B) 90° to 180°.
C) 180° to 270°.
D) 270° to 360°.
E) cannot be determined without additional information
1
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View Full Document13) You drive 6.00 km at 50.0 km/h and then another 6.00 km at 90.0 km/h. Your average speed over
the 12.0 km drive will be
13)
A) exactly 38.0 km/h.
B) greater than 70.0 km/h.
C) less than 70.0 km/h.XXX
D) equal to 70.0 km/h.
E) cannot be determined from the information given, must also know directions traveled
14) When is the average velocity of an object equal to the instantaneous velocity?
14)
A) only when the velocity is constantXXX
B) only when the velocity is increasing at a constant rate
C) only when the velocity is decreasing at a constant rate
D) never
E) always
15) Suppose that an object is moving with a constant velocity.
Make a statement concerning its
acceleration.
15)
A) The acceleration must be constantly increasing.
B) The acceleration must be equal to zero.XXX
C) The acceleration must be constantly decreasing.
D) The acceleration must be a constant non

zero value.
E) A statement cannot be made without additional information.
16) The slope of a tangent line at a given time value on a velocity versus time graph gives
16)
A) displacement.
B) instantaneous velocity.
C) instantaneous acceleration.XXX
D) average acceleration.
E) average velocity.
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 Spring '11
 anoka
 Force

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