Objects A and B are at the origin. If object A moves to #(8 ,5 )# and object B moves to #(9 ,-2 )# over #2 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
Apr 10, 2016

Answer:

#"the velocity of B from perspective of A : "3,54" m/s"#
#"angle have shown as the gold color :"278,13^o#

Explanation:

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#"displacement of B from perspective of A is:"#
#AB=sqrt((9-8)^2+(-2-5)^2)#
#AB=sqrt(1^2+(-7)^2)#
#AB=sqrt(1+49)#
#AB=sqrt50#
#AB=7,07 " m"#

#v=bar(AB)/(time)#

#v=(7,07)/2#

#v=3,54 " m/s"#