five ramps lead from the ground to the second floor of a workshop, as sketched below. all five ramps have the same height; ramps b, c, d and e have the same length; ramp a is longer than the other four. you need to push a heavy cart up to the second floor and you may choose any one of the five ramps.

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.