Objects A and B are at the origin. If object A moves to $(-3 ,-8 )$ and object B moves to $(1 ,-1 )$ 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 · 2017-07-18T13:45:36

The relative velocity of $B$ wrt $A$ is $=<4/3,7/3>$

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The absolute velocity of $A$ is $v_A=1/3*<-3,-8> = <-1,-8/3>$

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

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

$v_(B//A)=v_B-v_A$

$=<1/3,-1/3> - <-1,-8/3>$

$=<4/3,7/3>$

Objects A and B are at the origin. If object A moves to (-3 ,-8 )(-3 ,-8 ) and object B moves to (1 ,-1 )(1 ,-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.