n electron’s position is given by ????⃗ = 3.000 ????????̂ − 4.000???? ????̂ + 2.00 ???? , with t in seconds and ????⃗ in meters. (a) In unit-vector notation, what is the electron’s velocity ????⃗(????)? At t 3.00 s, what is ????⃗ (b) in unit vector notation and as (c) a magnitude and (d) an angle relative to the positive direction of the x axis?