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Question 11
A squirrel runs along an overhead telephone wire that stretches from the
top of one pole to the next. The creature is initially at position x
i
=
2.89 m, as measured from the center of the wire segment. It then
undergoes a displacement of
Δ
x = -5.03 m. What is the squirrel's
final position x
f
in meters?
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Question 12
A student drove to the university from her home and noted that the
odometer reading of her car increased by 12.0 km. The trip took
18.0 min. (a) What was her average speed? (b) If the straight-line
distance from her home to the university is 10.3 km in a direction
25.0
o
south of east, what was her average velocity?
Answers:
o
o
o

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Question 13
Find the following for path B in
Figure 2-59
: (a) The distance traveled. (b)
The magnitude of the displacement from start to finish. (c) The
displacement from start to finish.
Figure 2-59
Answers:
Response Feedback:
Correct
!

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Question 14
Response Feedback:
Correct
!

A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What
is its acceleration in m/s
2
?

Response Feedback:
Incorrect
!

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Question 15
A busy chipmunk runs back and forth along a straight line of acorns
that has been set out between his burrow and a nearby tree.
At some instant the chipmunk moves with a velocity of -1.15
m/s. Then, 2.11 s later, it moves at a velocity of 1.63 m/s.
What is the chipmunk's average acceleration during the 2.11-
s time interval in m/s
2
?
Response Feedback:
Correct
!