\"\"

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Gonzalez pushing the stretcher with a force of \"\" at \"\" with the horizontal.

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Howard is pulling the stretcher with a force of \"\" at \"\" with the horizontal.

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Draw a diagram using the above information.

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\"\"

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The horizontal force of Gonzalez is \"\".

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The horizontal force of Howard is \"\".

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The magnitude of the horizontal force on the stretcher is \"\".

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Therefore, option A is the correct choice.

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\"\"

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Option A is the correct choice.