Objects A and B are at the origin. If object A moves to $(3 ,-8 )$ and object B moves to $(-4 ,-4 )$ over $3 s$ , 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 · 2016-05-07T18:36:59

$v_"AB"=2.69m/s$

$"angle="150.26^o$

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$"displacement of B from perspective of A is:"$

$s=sqrt(7^2+4^2)=sqrt(49+16)=sqrt65$
$s=8.06m$

$v_"AB"=s/t$

$v_A=(8.06)/3$

$v_"AB"=2.69m/s$

$"angle="150.26^o$

Objects A and B are at the origin. If object A moves to (3 ,-8 )(3 ,-8 ) and object B moves to (-4 ,-4 )(-4 ,-4 ) over 3 s3 s, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.