contestada

A boat’s speed in still water is 1.60 m/s . The boat is to travel directly across a river whose current has speed 1.05 m/s. Determine the speed of the boat with respect to the shore.
Express your answer using three significant figures and include the appropriate units

Respuesta :

Answer:

1.91 m/s

Explanation:

Speed of boat in still water = [tex]v_{b}[/tex]=1.6 m/s

Speed of the current = [tex]v_c[/tex]=1.05 m/s

Speed of the boat with respect to the shore

Using vector addition we get

[tex]v_{bs}=\sqrt{v_b^2+v_c^2}\\\Rightarrow v_{bs}=\sqrt{1.6^2+1.05^2}\\\Rightarrow v_{bs}=1.91\ m/s[/tex]

Speed of the boat with respect to the shore is 1.91 m/s

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