posted by Sarah .
The velocity vefot of a ball is v(t)=-3x+4y at any time. Its initial position is r=12x-4y. The components of the velocity vector are in m/s and the components of the position vector are in meters. The symbols x and y are the unit vetors in x and y directions respectively.
Find the final position vector in component form at the end of 2 seconds.
Find the average acceleration vector.