Objects A and B are at the origin. If object A moves to #(3 ,-8 )# and object B moves to #(-4 ,1 )# 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
ali ergin
Apr 9, 2016

#v=3,8" m/s (the green vector shows direction)"#

Explanation:

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#"displacement between the Points A and B :"#
#Delta s=sqrt(9^2+7^2)#
#Delta s=sqrt(81+49)#
#Delta s=sqrt130#
#Delta s=11,40 " m"#

#v=(Delta s)/(Delta t)#

#v=(11,40)/3#

#v=3,8" m/s (the green vector shows direction)"#

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