Recent content by Quang

Homework Statement Liz rushes down onto a subway platform to find her train already departing. She stops and watches the cars go by. Each car is 8.60 m long. The first moves past her in 1.50 s and the second in 1.10 s. Find the constant acceleration of the train. Homework Equations...

ax = (x component of final v - x component of initial v)/t ay = ... a=...

m1v1 = (m1 + m2)v

use these results to find x,y components of the acceleration.

i'm sorry...:frown: i didnt pay attention

the initial velocity of the locomotive: Vot + 1/2at^2 = s => Vo=6.41 the velocity of the locomotive when it just leaves the crossing: V^2 - Vo^2 = 2as => V=10.25 32 - 10.25 = 1.6 x t => t = 13.6s