(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 22.0 m. She pushes in a direction 29° below the horizontal. A 48.0 N frictional force opposes the motion of the cart. What is the magnitude of the force that the shopper exerts?

2. Relevant equations

F = mg

W = (F cosθ)s

3. The attempt at a solution

1. F = (16kg)(9.8m/s^{2}) = 156.8 N

2. F_{N}= 156.8 N - 48.0 N = 108.8 N

Correct answer: 54.9 N

I know if you divide 108.8 by two you get 54.4 (which is really close to the answer), but I don't think you're supposed to divide by 2. Can someone help me out? :s

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# Homework Help: Shopping Cart Problem

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