Objects A and B are at the origin. If object A moves to #(0 ,-3 )# and object B moves to #(9 ,-3 )# 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
Apr 12, 2017

Answer:

The relative velocity is #=<3,0>#

Explanation:

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The absolute velocity of #A# is

#vecv_A=1/3<0,-3>=<0,-1>#

The absolute velocity of #B# is

#vecv_B=1/3<9,-3>=<3,-1>#

The relative velocity of #B# with respect to #A# is

#vecv_(B//A)=vecv_B-vecv_A#

#=<3,-1> - <0,-1>#

#=<3,0>#