x and y components?

Question

The position of an electron is given by = 3.09t - 2.62t2 + 8.31, with t in seconds and in meters. At t = 3.71 s, what are (a) the x-component, (b) the y-component, (c) the magnitude, and (d) the angle relative to the positive direction of the x axis, of the electron's velocity ?

Answer 1

Just differentiate.