The tractor-trailer unit is moving down the incline with a speed of 5.2 mi/hr when the driver brakes the tractor to a stop in a distance of 5.7 ft. Estimate the percent increase n in the hitch-force component which is parallel to the incline, compared with the force present at steady speed. The cart and its load combined weigh 470 Ib. State any assumptions. 11

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Forms of Energy

Energy is described as the capability to accomplish a task, like the ability to push a block by applying force on it. It is a quantitative property that is used to accomplish work on an object.