Physics for Scientists and Engineers with Modern Physics, 9th Edition Raymond A. Serway | John W. Jewett solutions manual and test bank
Physics for Scientists and Engineers with Modern Physics, 9th Edition
Raymond A. Serway, John W. Jewett
ISBN-10: 1133954057
ISBN-13: 9781133954057
© 2014
Instructor's Solutions Manual http://www.mediafire.com/view/2tbqoi8qicxod5r/PSE9e_ISM_Chapter07_final.pdf
Test Bank
Chapter 2—Motion in One Dimension
MULTIPLE CHOICE
1. The position of a particle moving along the x
axis is given by x = (21 + 22t -
6.0t2)m, where t is in s. What is the average velocity
during the time interval t = 1.0 s to t = 3.0 s?
|
a.
|
-6.0 m/s
|
|
b.
|
-4.0 m/s
|
|
c.
|
-2.0 m/s
|
|
d.
|
-8.0 m/s
|
|
e.
|
8.0 m/s
|
ANS: C PTS: 2 DIF: Average
2. A bullet is fired through a board, 14.0 cm
thick, with its line of motion perpendicular to the face of the board. If it
enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the
bullet's acceleration as it passes through the board?
|
a.
|
-500 km/s2
|
|
b.
|
-550 km/s2
|
|
c.
|
-360 km/s2
|
|
d.
|
-520 km/s2
|
|
e.
|
-275 km/s2
|
ANS: B PTS: 3 DIF: Challenging
3. The position of a particle moving along the x
axis is given by x = 6.0t2 -
1.0t3, where x is in meters and t in seconds.
What is the position of the particle when it achieves its maximum speed in the
positive x direction?
|
a.
|
24 m
|
|
b.
|
12 m
|
|
c.
|
32 m
|
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d.
|
16 m
|
|
e.
|
2.0 m
|
ANS: D PTS: 3 DIF: Challenging
4. The velocity of a particle moving along the x
axis is given for t > 0 by vx = (32.0t - 2.00t3) m/s, where t is in s.
What is the acceleration of the particle when (after t = 0) it achieves
its maximum displacement in the positive x direction?
|
a.
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-64.0 m/s2
|
|
b.
|
zero
|
|
c.
|
128 m/s2
|
|
d.
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32.0 m/s2
|
|
e.
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-32.0 m/s2
|
ANS: A PTS: 3 DIF: Challenging
5. The position of a particle as it moves along
the x axis is given for t > 0 by x = (t3
- 3t2 + 6t) m, where t is in s.
Where is the particle when it achieves its minimum speed (after t = 0)?
|
a.
|
3 m
|
|
b.
|
4 m
|
|
c.
|
8 m
|
|
d.
|
2 m
|
|
e.
|
7 m
|
ANS: B PTS: 2 DIF: Average
6. The position of a particle as it moves along
the x axis is given by x = 15e-2t
m, where t is in s. What is the acceleration of the particle at t =
1.0 s?
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a.
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22 m/s
|
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b.
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60 m/s
|
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c.
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8.1 m/s
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d.
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15 m/s
|
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e.
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35 m/s
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ANS: C PTS: 2 DIF: Average
7. Vx is the velocity of a
particle moving along the x axis as shown. If x = 2.0 m at t
= 1.0 s, what is the position of the particle at t = 6.0 s?
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a.
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-2.0 m
|
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b.
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+2.0 m
|
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c.
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+1.0 m
|
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d.
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-1.0 m
|
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e.
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6.0 m
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ANS: D PTS: 2 DIF: Average
8. A particle moving along the x axis has
a position given by x = (24t – 2.0t3) m, where t
is measured in s. What is the magnitude of the acceleration of the particle at
the instant when its velocity is zero?
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a.
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24 m/s2
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b.
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zero
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c.
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12 m/s2
|
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d.
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48 m/s2
|
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e.
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36 m/s2
|
ANS: A PTS: 2 DIF: Average
9. At t = 0, a particle is located at x
= 25 m and has a velocity of 15 m/s in the positive x direction. The
acceleration of the particle varies with time as shown in the diagram. What is
the velocity of the particle at t = 5.0 s?
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a.
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+15 m/s
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b.
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-15 m/s
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c.
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+30 m/s
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d.
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0
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e.
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-1.2 m/s
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ANS: C PTS: 2 DIF: Average
10. At t = 0, a particle is located at x
= 25 m and has a velocity of 15 m/s in the positive x direction. The
acceleration of the particle varies with time as shown in the diagram. What is
the position of the particle at t = 5.0 s?
|
a.
|
175 m
|
|
b.
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125 m
|
|
c.
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138 m
|
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d.
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154 m
|
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e.
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165 m
|
ANS: D PTS: 3 DIF: Challenging
11. A particle confined to motion along the x axis
moves with constant acceleration from x = 2.0 m to x = 8.0 m
during a 2.5-s time interval. The velocity of the particle at x = 8.0 m
is 2.8 m/s. What is the acceleration during this time interval?
|
a.
|
0.48 m/s2
|
|
b.
|
0.32 m/s2
|
|
c.
|
0.64 m/s2
|
|
d.
|
0.80 m/s2
|
|
e.
|
0.57 m/s2
|
ANS: B PTS: 3 DIF: Challenging
12. A proton moving along the x axis has
an initial velocity of 4.0 ´ 106 m/s and a constant
acceleration of 6.0 ´ 1012 m/s2. What is the
velocity of the proton after it has traveled a distance of 80 cm?
|
a.
|
5.1 ´ 106 m/s
|
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b.
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6.3 ´ 106 m/s
|
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c.
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4.8 ´ 106 m/s
|
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d.
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3.9 ´ 106 m/s
|
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e.
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2.9 ´ 106 m/s
|
ANS: A PTS: 2 DIF: Average
13. A particle moving with a constant
acceleration has a velocity of 20 cm/s when its position is x = 10 cm.
Its position 7.0 s later is x = -30
cm. What is the acceleration of the particle?
|
a.
|
-7.3 cm/s2
|
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b.
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-8.9 cm/s2
|
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c.
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-11 cm/s2
|
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d.
|
-15 cm/s2
|
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e.
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-13 cm/s2
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ANS: A PTS: 2 DIF: Average
14. An automobile moving along a straight track
changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. What is the
(constant) acceleration of the vehicle during this time?
|
a.
|
8.0 m/s
|
|
b.
|
9.6 m/s
|
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c.
|
12 m/s
|
|
d.
|
6.9 m/s
|
|
e.
|
0.20 m/s
|
ANS: C PTS: 2 DIF: Average
15. In 2.0 s, a particle moving with constant
acceleration along the x axis goes from x = 10 m to x = 50
m. The velocity at the end of this time interval is 10 m/s. What is the
acceleration of the particle?
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a.
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+15 m/s2
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b.
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+20 m/s2
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c.
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-20 m/s2
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d.
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-10 m/s2
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e.
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-15 m/s2
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ANS: D PTS: 2 DIF: Average
16. An automobile manufacturer claims that its
product will, starting from rest, travel 0.40 km in 9.0 s. What is the
magnitude of the constant acceleration required to do this?
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a.
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9.9 m/s2
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b.
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8.9 m/s2
|
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c.
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6.6 m/s2
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d.
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5.6 m/s2
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e.
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4.6 m/s2
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ANS: A PTS: 2 DIF: Average
17. An automobile traveling along a straight road
increases its speed from 30.0 m/s to 50.0 m/s in a distance of 180 m. If the
acceleration is constant, how much time elapses while the auto moves this
distance?
|
a.
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6.00 s
|
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b.
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4.50 s
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c.
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3.60 s
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d.
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4.00 s
|
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e.
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9.00 s
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ANS: B PTS: 2 DIF: Average
18. An object moving on the x axis with a
constant acceleration increases its x coordinate by 80 m in a time of
5.0 s and has a velocity of +20 m/s at the end of this time. Determine the
acceleration of the object during this motion.
|
a.
|
-1.6 m/s2
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|
b.
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+6.4 m/s2
|
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c.
|
+1.6 m/s2
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d.
|
-2.0 m/s2
|
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e.
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-6.4 m/s2
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ANS: C PTS: 2 DIF: Average
19. An electron, starting from rest and moving
with a constant acceleration, travels 2.0 cm in 5.0 ms. What is the magnitude
of this acceleration?
|
a.
|
2.5 km/s2
|
|
b.
|
0.80 km/s2
|
|
c.
|
1.6 km/s2
|
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d.
|
1.3 km/s2
|
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e.
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3.2 km/s2
|
ANS: C PTS: 1 DIF: Easy
20. A particle starts from rest at xi
= 0 and moves for 10 s with an acceleration of +2.0 cm/s2. For the
next 20 s, the acceleration of the particle is -1.0
cm/s2. What is the position of the particle at the end of this
motion?
|
a.
|
zero
|
|
b.
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+3.0 m
|
|
c.
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-1.0 m
|
|
d.
|
+2.0 m
|
|
e.
|
-3.0 m
|
ANS: B PTS: 2 DIF: Average
21. A rocket, initially at rest, is fired
vertically with an upward acceleration of 10 m/s2. At an altitude of
0.50 km, the engine of the rocket cuts off. What is the maximum altitude it
achieves?
|
a.
|
1.9 km
|
|
b.
|
1.3 km
|
|
c.
|
1.6 km
|
|
d.
|
1.0 km
|
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e.
|
2.1 km
|
ANS: D PTS: 3 DIF: Challenging
22. A ball is thrown vertically upward with an
initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from
the same initial height as the ball) with an initial speed of 24 m/s. At what
height above the release point will the ball and stone pass each other?
|
a.
|
17 m
|
|
b.
|
21 m
|
|
c.
|
18 m
|
|
d.
|
27 m
|
|
e.
|
31 m
|
ANS: A PTS: 3 DIF: Challenging
23. An object is thrown vertically and has an
upward velocity of 18 m/s when it reaches one fourth of its maximum height
above its launch point. What is the initial (launch) speed of the object?
|
a.
|
35 m/s
|
|
b.
|
25 m/s
|
|
c.
|
30 m/s
|
|
d.
|
21 m/s
|
|
e.
|
17 m/s
|
ANS: D PTS: 3 DIF: Challenging
24. A stone is thrown from the top of a building
with an initial velocity of 20 m/s downward. The top of the building is 60 m
above the ground. How much time elapses between the instant of release and the
instant of impact with the ground?
|
a.
|
2.0 s
|
|
b.
|
6.1 s
|
|
c.
|
3.5 s
|
|
d.
|
1.6 s
|
|
e.
|
1.0 s
|
ANS: A PTS: 2 DIF: Average
25. An object is thrown downward with an initial
(t = 0) speed of 10 m/s from a height of 60 m above the ground. At the
same instant (t = 0), a second object is propelled vertically upward
from ground level with a speed of 40 m/s. At what height above the ground will
the two objects pass each other?
|
a.
|
53 m
|
|
b.
|
41 m
|
|
c.
|
57 m
|
|
d.
|
46 m
|
|
e.
|
37 m
|
ANS: B PTS: 3 DIF: Challenging
26. A toy rocket, launched from the ground, rises
vertically with an acceleration of 20 m/s2 for 6.0 s until its motor
stops. Disregarding any air resistance, what maximum height above the ground
will the rocket achieve?
|
a.
|
1.1 km
|
|
b.
|
0.73 km
|
|
c.
|
1.9 km
|
|
d.
|
0.39 km
|
|
e.
|
1.5 km
|
ANS: A PTS: 3 DIF: Challenging
27. A rock is thrown downward from an unknown
height above the ground with an initial speed of 10 m/s. It strikes the ground
3.0 s later. Determine the initial height of the rock above the ground.
|
a.
|
44 m
|
|
b.
|
14 m
|
|
c.
|
74 m
|
|
d.
|
30 m
|
|
e.
|
60 m
|
ANS: C PTS: 2 DIF: Average
28. A ball thrown vertically from ground level is
caught 3.0 s later when it is at its highest point by a person on a balcony
which is 14 m above the ground. Determine the initial speed of the ball.
|
a.
|
19 m/s
|
|
b.
|
4.7 m/s
|
|
c.
|
10 m/s
|
|
d.
|
34 m/s
|
|
e.
|
17 m/s
|
ANS: A PTS: 2 DIF: Average
29. An object is thrown vertically upward such
that it has a speed of 25 m/s when it reaches two thirds of its maximum height
above the launch point. Determine this maximum height.
|
a.
|
64 m
|
|
b.
|
48 m
|
|
c.
|
32 m
|
|
d.
|
96 m
|
|
e.
|
75 m
|
ANS: D PTS: 2 DIF: Average
30. The velocity at the midway point of a ball
able to reach a height y when thrown with velocity vi
at the origin is:
|
a.
|
 |
|
b.
|
 |
|
c.
|
 |
|
d.
|
 |
|
e.
|
gy
|
ANS: C PTS: 2 DIF: Average
31. When Jim and Rob ride bicycles, Jim can only
accelerate at three quarters the acceleration of Rob. Both start from rest at
the bottom of a long straight road with constant upward slope. If Rob takes 5.0
minutes to reach the top, how much earlier should Jim start to reach the top at
the same time as Rob?
|
a.
|
25 s
|
|
b.
|
40 s
|
|
c.
|
46 s
|
|
d.
|
55 s
|
|
e.
|
75 s
|
ANS: C PTS: 3 DIF: Challenging
32. When starting from rest at the bottom of a
straight road with constant upward slope, Joan bicycles to the top 50.0 s ahead
of Sally, whose travel time is 5.00 minutes. What is the ratio of Joan's
acceleration to Sally's acceleration?
|
a.
|
0.694
|
|
b.
|
0.833
|
|
c.
|
1.20
|
|
d.
|
1.44
|
|
e.
|
6.00
|
ANS: D PTS: 2 DIF: Average
33. To help Kim practice for the Special
Olympics, Sally runs beside him for half the required distance. She runs the
remaining distance at her regular speed and arrives 90 seconds ahead of Kim.
What is the ratio of Sally's regular speed to Kim's speed? Use tKim
for Kim's total time.
|
a.
|
 |
|
b.
|
 |
|
c.
|
 |
|
d.
|
 |
|
e.
|
 |
ANS: C PTS: 2 DIF: Average
34. The position of a particle moving along the y
axis has a position given by
Is there any time interval during which the
particle is not moving?
|
a.
|
Yes, from 0.60 s to 1.00 s.
|
|
b.
|
Yes, from 0.795 s to 0.805 s.
|
|
c.
|
Yes, at the time t = 0.80 s.
|
|
d.
|
No, the velocity is never zero.
|
|
e.
|
No, an instant is not the same as a time
interval.
|
ANS: E PTS: 1 DIF: Easy
35. A particle moving along the x axis has
a position given by x = 54t -
2.0t3 m. At the time t = 3.0 s, the speed of the
particle is zero. Which statement is correct?
|
a.
|
The particle remains at rest after t
= 3.0 s.
|
|
b.
|
The particle no longer accelerates after t
= 3.0 s.
|
|
c.
|
The particle can be found at positions x
< 0 m only when t < 0 s.
|
|
d.
|
All of the above are correct.
|
|
e.
|
None of the above is correct.
|
ANS: E PTS: 2 DIF: Average
36. Two identical balls are at rest side by side
at the bottom of a hill. Some time after ball A is kicked up the hill, ball B
is given a kick up the hill. Ball A is headed downhill when it passes ball B
headed up the hill. At the instant when ball A passes ball B,
|
a.
|
it has the same position and velocity as
ball B.
|
|
b.
|
it has the same position and acceleration
as ball B.
|
|
c.
|
it has the same velocity and acceleration
as ball B.
|
|
d.
|
it has the same displacement and velocity
as ball B.
|
|
e.
|
it has the same position, displacement and
velocity as ball B.
|
ANS: B PTS: 1 DIF: Easy
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