What is the speed of an object that travels from #( 1,-4,6) # to #( 0,-9,2) # over #3 s#?

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What is the speed of an object that travels from #( 1,-4,6) # to #( 0,-9,2) # over #3 s#?

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Answer 1 · 2016-03-04T20:53:26

#v=sqrt42/3 " "m/s#

Explanation:

#"distance between the given points is: "Delta s=sqrt(1^2+5^2+4^2)#
#Delta s=sqrt(1+25+16)=sqrt 42 " units"#
#v=(Delta s)/(Delta t)#
#v=sqrt42/3 " "m/s#

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What is the speed of an object that travels from #( 1,-4,6) # to #( 0,-9,2) # over #3 s#?

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