- #1

Vertiviper

- 4

- 0

## Homework Statement

A man (weighing 915 N) stands on a long railroad flatcar (weighing 2005 N) as it rolls at 17.0 m/s in the positive direction of an x axis, with negligible friction. Then the man runs along the flatcar in the negative x direction at 46.00 m/s relative to the flatcar. What is the resulting increase in the speed of the flatcar?

## Homework Equations

Pi=Pf

## The Attempt at a Solution

Pi=m1v1+m2v2

Pi= 5065.49

Pf=m1(-46.0m/s+ 17m/s) + m2 (Vi+17m/s)

V=18.26 -incorrect