- #1

dois

- 23

- 0

## Homework Statement

The question says

"A person is dragging a box with the mass of 60kg by a rope. The person begins to drag the box at 4 m/s [F]. All of a sudden the person sees on coming traffic. The person calculates that they have 3 seconds to get out of the way. If at the end of the 3 seconds the box is moving 10 m/s [F] and the coefficient of friction between the box and the ground is 0.7, find the force which the person is pulling the box."

my biggest problem is I don't know what a coefficient is.

## Homework Equations

im not to sure what equations i would need to use. My guess would be d=(vi)(t) + 1/2 (a)(t^2)

## The Attempt at a Solution

To find out the force which the person is pulling the box would we still use

F= m*a

and we would need to figure out the displacement first with d=(vi)(t) + 1/2 (a)(t^2)