[填空题]
A camel walks in a straight line on flat grassland. The camelp(xr/is vvt/ ,'s path is givej baxi tn+xvkfy/ /.vjt)1-:v n by the parav+tk1v: )jy / vjfx.ibn/ax -tmetric equations x=3 t-2 and y=1+4 t , where t is the walk time, in hours, t \geq 0 . Distances are measured in kilometres.
1. (1)Write down the initial position of the camel.(a,b) a= b=
(2)Find the position of the camel after 2 hours. B (a,b) a= b=
2. (1) Write down the velocity vector of the camel.$\begin{pmatrix}
a \\
b
\end{pmatrix}$ a = b =
(2)Find the speed of the camel. $kmh^{-1}$
