# Question: consider the trajectory rt t21t2vt1 find a vector n...

###### Question details

Consider the trajectory r(t) = $\left(\begin{array}{c}{t}^{2}+1\\ {t}^{2}-vt+1\end{array}\right)$. Find a vector n per pendicular to the curve describe by this trajectory at time t = v.

Hint: Sketch a schematic figure showing axes, the origin, the curve described by this trajectory, by the position vector r(t) at time t=v, and the vector n to be found.

Answer: n = <___,___>