Question:
Two cars approach a street corner at right angles to each other (Fig. 3-47). Car 1 travels at a speed relative to Earth $v_\textrm{1E} = 35 \textrm{ km/h}$, and car 2 at $v_\textrm{2E} = 55 \textrm{ km/h}$. What is the relative velocity of car 1 as seen by car 2? What is the velocity of car 2 relative to car 1?
Figure 3-47.
Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.
Quick Answer:
$v_{12} = 65\textrm{ km/h, } 58^\circ \textrm{ West of North. } $$v_{21} = 65\textrm{ km/h, }32^\circ \textrm{ South of East}$
Giancoli 7th Edition, Chapter 3, Problem 51
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