A particle has an initial velocity of 4.8 m/s toward the south and a final velocity of 7.1 m/s toward the east. The particle was subject to a constant acceleration for 0.25 s. The magnitude and the direction of the acceleration must have been O 8.6 m/s at 34.10 north of east O 260 m/s at 34.10 south of east O 34 m/s2 at 34.1' north of east O 34 m/s2 at 34.10 south of east O 8.6 m/s2 at 34.10 south of east