# Finding initial velocity given displacement, time, and final velocity

by dudelol
Tags: acceleration, initial velocity
 P: 1 1. The problem statement, all variables and given/known data A woman running at constant velocity speeds up and accelerates uniformly to the west by running 253 m west in 6.12 s. ff she ends up getting up to a velocity of 5.05 m/s w, how fast was she going originally? If she had run the same disance in 5.50 s, what would her average velocity have been during her acceleration? vf = final velocity = 5.5m/s x = displacement = 253m t = 6.12 s find vi? 2. Relevant equations vf=vi+at v=(xf-xi)/t 3. The attempt at a solution I honestly am stumped on this question. average velocity during the acceleration 253/6.12 =41.34 m/s
 P: 1,180 This woman would be running at like 100 miles per hour, and then the problem says she ends up "getting up to" a velocity of 5.05 m/s. Something's wrong here.

 Related Discussions Introductory Physics Homework 1 Introductory Physics Homework 4 Introductory Physics Homework 2 Introductory Physics Homework 4 Introductory Physics Homework 6