An industrial die machine is used to stamp out holes in pieces of sheet aluminum. the die strikes the surface of the street of metal at a speed of 10 m/s, passes through the 0.635 cm thick sheet, reverses its direction, and is again moving at 10 m/s as it passes the top surface of the metal moving upward. What is the average acceleration of the die tool as it passes down through the metal and back up again? What is the direction of that acceleration?

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