Objects A and B are at the origin. If object A moves to $(- 7, - 9)$ $(-7 ,-9 )$ and object B moves to $(1, - 1)$ $(1 ,-1 )$ over $8 s$ $8 s$ , 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 · 2016-04-13T20:58:58

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$A B = \sqrt{{(- 8)}^{2} + (8^{2})}$ $AB=sqrt((-8)^2+(8^2))$

$A B = \sqrt{64 + 64}$ $AB=sqrt(64+64)$

$A B = 11, 31 m$ $AB=11,31 m$

$v = \frac{11, 31}{8}$ $v=(11,31)/8$
$v = 1, 41 \frac{m}{s}$ $v=1,41 m/s$
$∠ = 45^{o}$ $angle=45^o$

Objects A and B are at the origin. If object A moves to (−7,−9)(-7 ,-9 ) and object B moves to (1,−1)(1 ,-1 ) over 8s8 s, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.