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(c)
The speed graph is obtained by reflecting the negative
portion of the velocity graph, 2
,
t
,
7, about the
x
axis.
(d)
For 0
#
t
,
1:
a
5 }
3
1
2
2
0
0
} 5
3 m/sec
2
For 1
,
t
,
3:
a
5
}
2
3
3
2
2
1
3
}52
3 m/sec
2
For 3
,
t
,
6:
a
5
}
2
3
6
2
2
(
2
3
3)
}5
0 m/sec
2
For 6
,
t
,
8:
a
5
}
3
8
2
2
(
2
6
3)
} 5
3 m/sec
2
For 8
,
t
#
10:
a
5
}
1
0
0
2
2
3
8
}52
1.5 m/sec
2
24. (a)
The particle is moving left when the graph of
s
has
negative slope, for 2
,
t
,
3 and for 5
,
t
#
6.
The particle is moving right when the graph of
s
has
positive slope, for 0
#
t
,
1.
The particle is standing still when the graph of
s
is
horizontal, for 1
,
t
,
2 and for 3
,
t
,
5.
(b)
For 0
#
t
,
1:
v
5 }
2
1
2
2
0
0
} 5
2 cm/sec
Speed
5
)
v
)
5
2 cm/sec
For 1
,
t
,
2:
v
5 }
2
2
2
2
2
1
} 5
0 cm/sec
Speed
5
)
v
)
5
0 cm/sec
For 2
,
t
,
3:
v
5
}
2
3
2
2
2
2
2
}52
4 cm/sec
Speed
5
)
v
)
5
4 cm/sec
For 3
,
t
,
5:
v
5
}
2
2
5
2
2
(
2
3
2)
}5
0 cm/sec
Speed
5
)
v
)
5
0 cm/sec
For 5
,
t
#
6:
v
5
}
2
4
6
2
2
(
2
5
2)
}52
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This note was uploaded on 10/05/2011 for the course MAC 1147 taught by Professor German during the Fall '08 term at University of Florida.
 Fall '08
 GERMAN

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