A boat crosses a river of width 123 m in which the current has a uniform speed of 1.49 m/s. The pilot maintains a bearing (i.e., the direction in which the boat points) per- pendicular to the river and a throttle setting to give a constant speed of 2.66 m/s relative to the water. What is the magnitude of the speed of the boat relative to a stationary shore observer? Answer in units of m/s. Answer in units of m/s.

A boat crosses a river of width 123 m in which the current has a uniform speed of 1.49 m/s. The pilot maintains a bearing (i.e., the direction in which the boat points) per- pendicular to the river and a throttle setting to give a constant speed of 2.66 m/s relative to the water. What is the magnitude of the speed of the boat relative to a stationary shore observer? Answer in units of m/s. Answer in units of m/s.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

A boat crosses a river of width 123 m in
which the current has a uniform speed of
1.49 m/s. The pilot maintains a bearing (i.e.,
the direction in which the boat points) per-
pendicular to the river and a throttle setting
to give a constant speed of 2.66 m/s relative
to the water.
What is the magnitude of the speed of the
boat relative to a stationary shore observer?
Answer in units of m/s. Answer in units of
m/s.

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