A keen physics student starts swimming on the south bank of a river and heads straight across. They can swim at 1.2 m/s. The current is flowing west at 2.0 m/s. Calculate the magnitude of the swimmers velocity relative to the ground. Input your answer with one decimal place, round accordingly.

A keen physics student starts swimming on the south bank of a river and heads straight across. They can swim at 1.2 m/s. The current is flowing west at 2.0 m/s. Calculate the magnitude of the swimmers velocity relative to the ground. Input your answer with one decimal place, round accordingly.

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 keen physics student starts swimming on the south bank of a river and heads
straight across. They can swim at 1.2 m/s. The current is flowing west at 2.0 m/s.
Calculate the magnitude of the swimmers velocity relative to the ground. Input your
answer with one decimal place, round accordingly.

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