How fast is the current flowingIn a rescue attempt, a hovering helicopter drops a life preserver to a swimmer being swept downstream by ariver current of constant velocity v. The helicopter is at a height of 9.8 m. The swimmer is 6.0 m upstream froma point directly under the helicopter when the life preserver is released. It lands 2.0 m in front of the swimmer.How fast is the current flowing? Neglect air resistance.(A) 13.7 m/s (B) 9.8 m/s (C) 6.

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22 Mar 2018