The velocity of a particle moving along the y-axis is given by v(t)=8-2t for t≥ 0. The particle moves upward until it reaches the origin and then moves downward. The position of the particle at any time t is given by.
O -r²+8z-16
O -t²+8t+16
O 2r²-8r-16
O 8x-2x²
O 8z-t²