Objects A and B are at the origin. If object A moves to (-9 ,-4 ) and object B moves to (-3 ,6 ) 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.

1 Answer
Jun 15, 2017

The relative velocity is = <2,10/3>

Explanation:

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The absolute velocity of A is

v_A=1/3<-9,-4> = <-3,-4/3>

The absolute velocity of B is

v_B=1/3<-3,6> = <-1,2>

The relative velocity of B with respect to A

v_(B//A)=v_B-v_A=<-1,2> - <-3,-4/3>

= <2,10/3>