Objects A and B are at the origin. If object A moves to #(5 ,-3 )# and object B moves to #(9 ,7 )# 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.

Question

1301 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-16T20:34:55

#v=3,59 " "m/s#

#angle=68,2^o#

enter image source here
#"first; let's displacement of B from perspective of A:"#

#AB=sqrt((9-5)^2+(7+3)^2)#

#AB=sqrt(4^2+10^2)#

#AB=sqrt(116)#

#AB=10,77" m"#

#v=(AB)/3#

#v=(10,77)/3#

#v=3,59 " "m/s#

#angle=68,2^o#