- #1

new^2^physics

- 13

- 0

## Homework Statement

At T=0 a particle leaves the origin with a velocity of 12 m/s in the positive x direction and moves in the xy plane with a constant acceleration of (-2.0i + 4.0j)m/s^2. At the instant the y coordinate of the particle is 18 m, what is the x coordinate of the particle.

## Homework Equations

rf=ri + vit + 1/2at

^{2}

=(12m/s)(t) + 1/2 (-2.0i + 4.0j)t

^{2}

So stuck. Any direction or help would be greatly appreciated!