Ch2_2
Due: 10:00pm on Friday, September 3, 2010
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Problem 2.14
A car starts from
= 16
at
= 0 and moves with the velocity graph shown in figure below.
Part A
What is the object's position at
?
Express your answer using two significant figures.
ANSWER:
=
32
Correct
Part B
What is the object's position at
?
Express your answer using two significant figures.
ANSWER:
=
34
Correct
Part C
What is the object's position at
?
Express your answer using two significant figures.
ANSWER:
=
32
Correct
Part D
Does this car ever change direction?
Answer yes or no.
ANSWER:
Yes
Correct
Part E
If so, at what time? If this car doesn't change direction type none.
ANSWER:
=
3.0
Correct
Problem 2.21
When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.3
in 0.12
.
Part A
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 Spring '08
 STEPHENS
 Physics, Acceleration, Velocity

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