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A horizontal rope is attached from a truck to a 1427-kg car. As the truck tows the car on a horizontal straight road, the rope will break if the tension

is greater than 2519 N. Ignoring friction, what is the maximum possible acceleration of the truck if the rope does not break? Sheena can row a boat at 3.10 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at 2.00 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of 25.0° from the direction straight across the river.

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