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An object moving in 3 dimensions with constant velocity
possesses
a vector displacement of the form
![\begin{displaymath}
{\bf r}(t) = {\bf r}_0 + {\bf v} t,
\end{displaymath}](img293.png) |
(61) |
where the constant vector
is the displacement at time
. Note
that
and
, as expected.
As illustrated in Fig. 14, the object's trajectory is a straight-line
which passes through point
at time
and runs parallel to vector
.
Figure 14:
Motion with constant velocity
![\begin{figure}
\epsfysize =2.5in
\centerline{\epsffile{cv.eps}}
\end{figure}](img297.png) |
Richard Fitzpatrick
2006-02-02