- #1

gcharles_42

- 11

- 0

## Homework Statement

A box of mass 45 kg is initially at rest on a flat floor. The coefficient of kinetic friction between the box and the floor is 0.60. A woman pushes horizontally against the box with a force of 539 N until the box attains a speed of 2 m/s.

What is the CM-work done by the friction force on the box?

What is the work done by the woman on the box?

## Homework Equations

W= F (Δ x)

## The Attempt at a Solution

I tried solving for delta x by using force and mass to calculate for acceleration and then acceleration, Vo and Vf to find d (which I thought was Δ x) with the equation vf^2 = vo^2 + 2(a) d but I got the wrong answer