(Figure 1)A swimmer wants to cross a river, from point A to point B, as shown in the figure. The distance di (from A to C) is 200 m, the distance d (from C to B) is 150 m, and the speed v, of the current in the river is 5 km/hour. Suppose that the swimmer's velocity relative to the rat

Principles of Physics: A Calculus-Based Text
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Chapter3: Motion In Two Dimensions
Section: Chapter Questions
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Part A
To swim directly from A to B, what speed us, relative to the water, should the swimmer have?
Express the swimmer's speed numerically, to three significant figures, in kilometers per hour.
Transcribed Image Text:Part A To swim directly from A to B, what speed us, relative to the water, should the swimmer have? Express the swimmer's speed numerically, to three significant figures, in kilometers per hour.
(Figure 1)A swimmer wants to cross a river, from point A
to point B, as shown in the figure. The distance di (from
A to C) is 200 m, the distance d2 (from C to B) is 150 m,
and the speed v, of the current in the river is 5
km/hour. Suppose that the swimmer's velocity relative
to the water makes an angle of 0 = 45 degrees with the
line from A to C, as indicated in the figure.
Figure
1 of 1
di
E=5km/hour
Transcribed Image Text:(Figure 1)A swimmer wants to cross a river, from point A to point B, as shown in the figure. The distance di (from A to C) is 200 m, the distance d2 (from C to B) is 150 m, and the speed v, of the current in the river is 5 km/hour. Suppose that the swimmer's velocity relative to the water makes an angle of 0 = 45 degrees with the line from A to C, as indicated in the figure. Figure 1 of 1 di E=5km/hour
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