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A waitress shoves a ketchup bottle with mass 0.45 kg to her right along
a smooth, level lunch counter. The bottle leaves her hand moving at
2.0 m>s, then slows down as it slides because of a constant horizontal
friction force exerted on it by the countertop. It slides for 1.0 m before
coming to rest. What are the magnitude and direction of the friction
force acting on the bottle?
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