Objects A and B are at the origin. If object A moves to $(- 7, 2)$ $(-7 ,2 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $2 s$ $2 s$ , what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

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Objects A and B are at the origin. If object A moves to $(- 7, 2)$ $(-7 ,2 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $2 s$ $2 s$ , what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

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Answer 1 · 2016-03-04T20:43:37

$v_{A B} = \frac{\sqrt{68}}{2} \frac{m}{s} ( the green vector)$ $v_(AB)=sqrt68/2 " "m/s"( the green vector)"$
$you can calculate α using figure$ $" you can calculate "alpha " using figure"$

Explanation:

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$displacement between the point A and B :$ $"displacement between the point A and B :"$
$- - \to A B = \sqrt{8^{2} + 2^{2}} = \sqrt{68} m$ $vec(AB)=sqrt (8^2+2^2)=sqrt68" "m$
$v_{A B} = \frac{\sqrt{68}}{2} \frac{m}{s} ( the green vector)$ $v_(AB)=sqrt68/2 " "m/s"( the green vector)"$
$you can calculate α using figure$ $" you can calculate "alpha " using figure"$

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Objects A and B are at the origin. If object A moves to $(- 7, 2)$ $(-7 ,2 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $2 s$ $2 s$ , what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

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Objects A and B are at the origin. If object A moves to (-7 ,2 )(−7,2)(-7 ,2 ) and object B moves to (-5 ,-6 )(−5,−6)(-5 ,-6 ) over 2 s2s2 s, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

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Objects A and B are at the origin. If object A moves to $(- 7, 2)$ $(-7 ,2 )$ and object B moves to $(- 5, - 6)$ $(-5 ,-6 )$ over $2 s$ $2 s$ , what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.