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If the speed of the crate at A is 15 ft/s which is increasing at a rate v=3 ft/s^2, determine the magnitude of the acceleration of the crate at this instant. [crate is on an incline sliding back toward the orgin at a distance of 10ft - no specific height is given. Also on the diagram it has: y=(1/16)*x^2 for the ramp].

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