Posted by **lanre** on Thursday, July 19, 2012 at 8:51pm.

Suppose the slope of a beach underneath the ocean is 21 cm of dropoff for every 1.2 m of horizontal distance. A wave is moving inland, slowing down as it enters shallower water. What is its acceleration when it is 16 m from the shoreline? (Let the +x direction be towards the shoreline. Indicate the direction with the sign of your answer.)

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