The initial and final velocities, respectively, of a particle in four situations are:
(i) vi = 2 m/s, vf = 3 m/s.
(ii) vi = - 2 m/s, vf= 3 m/s
(iii) vi = - 2 m/s, vf= - 3 m/s
(iv) vi = 2 m/s, vf= - 3 m/s
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the magnitude of the particle's constant acceleration is the same in all four situations. rank the situations according to the magnitude of the particle's displacement, greatest first, during the change from initial to final velocity.

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?