Question

Objects A and B are at the origin. If object A moves to `(6 ,-2 )` and object B moves to `(2 ,9 )` over `5 s`, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.

Answer 1

`v_(AB)=sqrt137/5 m/s " velocity of B from the perspective of A(green vector)."`

Explanation:

`"distance between the point of A and B :"`
`Delta s=sqrt( 11²+4^2) " " Delta s=sqrt(121+16)" "Delta s=sqrt137 m`
`v_(AB)=sqrt137/5 m/s " velocity of B from the perspective of A(green vector)."`
`"the angle of perspective is shown in figure"(alpha)." " tan alpha=11/4`