Describe a physical sitnation in which an object that moves in the xy plane might have an acceleration with a constant positive x component and a constant negative y component.

Consider a particle moving in xy plane whose position vector is given as:
.
The velocity vector of the particle is given as:

The acceleration vector of the particle is given as:

Therefore the acceleration vector of the particle is such that it has a constant positive x component of magnitude 2 units and a constant negative y component of magnitude 6 units.