Objects A and B are at the origin. If object A moves to $(-4 ,7 )$ and object B moves to $(6 ,0 )$ 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 · 2017-05-09T09:15:55

The relative velocity is $=(10/3veci-7/3vecj)ms^-1$

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The absolute velocity of $A$ is

$vecv_A=1/3<-4,7>=<-4/3,7/3>$

The absolute velocity of $B$ is

$vecv_B=1/3<6,0> = <2,0>$

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

$vecv_(B//A)=vecv_B-vecv_A$

$= <2,0 > - <-4/3,7/3>$

$=<10/3,-7/3>$

Objects A and B are at the origin. If object A moves to (-4 ,7 )(-4 ,7 ) and object B moves to (6 ,0 )(6 ,0 ) 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.