Objects A and B are at the origin. If object A moves to $(-7 ,3 )$ and object B moves to $(-6 ,-1 )$ 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 · 2017-07-01T08:42:40

The relative velocity is $=<1/3, -4/3>$

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The absolute velocity of $A$ is $v_A=1/3<-7,3> = <-7/3,1>$

The absolute velocity of $B$ is $v_B=1/3<-6,-1> = <-2,-1/3>$

The relatve velocity of $B$ with respect to $A$ is

$v_(B//A)=v_B-v_A=<-2,-1/3> - <-7/3,1>$

$=<-2+7/3, -1/3-1>$

$=<1/3, -4/3>$

Objects A and B are at the origin. If object A moves to (-7 ,3 )(-7 ,3 ) and object B moves to (-6 ,-1 )(-6 ,-1 ) 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.