CE325– Examination #1
Name
Problem Number One
Given the position of a particle as
~
r
(
t
)=3
t
2
ˆ
ı
+(3
t
2

t
3
)ˆ
+(
te
t
)
ˆ
k,
(a) Find the velocity and acceleration vectors at
t
=1
.
5
sec in the Cartesian coordinate system. (b)
Find the tangential unit vector,
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 Fall '08
 DocWong
 Cartesian Coordinate System, tangential unit vector

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