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.

1 Answer
Mar 3, 2016

Answer:

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

Explanation:

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#"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#