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## Homework Statement

http://img406.imageshack.us/img406/117/physicsprob3pp6.jpg [Broken]

__known date__

1. angle= 29 degrees

2. frictional force = 48 N

3. mass of cart = 16 kg

4. displacement = 22 meters

5. velocity = constant

## Homework Equations

F=ma

F(s)=mas

W=F cos theta (s)

## The Attempt at a Solution

this problem gave me a headache when i attempted to solve it. first i resolved that since velocity is constant, then a=0 but that would mean that the force = 0 and that would say that the person is not exerting any force on the cart. that's all i have down.

v=constant

a=0

F(s)=mas

0=0

whats the force she's exerting then? i know how to figure out work, that's easy. just use the work formula.

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