Objects A and B are at the origin. If object A moves to $(5 ,-3 )$ and object B moves to $(-7 ,2 )$ 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.

Question

2193 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-04-02T11:44:11

The relative velocity is $= <-4, 5/3> ms^-1$

![www.slideshare.net]( useruploads.socratic.org )

The absolute velocity of $A$ is $v_A=1/3 <5,-3> = <5/3, -1>$

The absolute velocity of $B$ is $v_B=1/3 <-7,2> = <-7/3, 2/3>$

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

$v_(B//A)=v_B- v_A=<-7/3, 2/3> - <5/3, -1>$

$= <-7/3-5/3, 2/3+1>$

$= <-4, 5/3> ms^-1$

Objects A and B are at the origin. If object A moves to (5 ,-3 )(5 ,-3 ) and object B moves to (-7 ,2 )(-7 ,2 ) 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.