Figure shows the straight path of a particle across an xy coordinate system as the particle is accelerated from rest during time interval ∆t1. The acceleration is constant. The xy coordinates for point A are (4.00 m, 6.00 m); those for point B are (12.0 m, 18.0 m).

(a) What is the ratio ay/ax of the acceleration components?

(b) What are the coordinates of the particle if the motion is continued for another interval equal to ∆t1?