Objects A and B are at the origin. If object A moves to #(3 ,-5 )# 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.

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Answer 1 · 2016-04-25T12:59:57

#v_A=2,81 m/s#

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#"displacement for B from the perspective of A:"#

#"displacement="sqrt((3-2)^2+(-5-9)^2)#

#"displacement="sqrt(1^2+14^2)#

#"displacement="sqrt(197)#

#"displacement="14,04m#

#v_A="displacement"/t#

#v_A=(14,04)/5#
#v_A=2,81 m/s#