Problem water at the top of horseshoe falls part of niagara, Ask an Expert

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Problem: Water at the top of Horseshoe Falls (part of Niagara Falls) is moving horizontally at 8.7m/s as it goes off the edge and plunges 53 m to the pool below.

Part A: If you ignore air resistance, at what angle with respect to the vertical is the falling water moving as it enters the pool?

Please, show work so I can understand the concept. Thanks.

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