What is the speed of an object that travels from #( 8 , 4, 5 ) # to #( 6 , -4, ,2 ) # over #4 s#?

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Answer 1 · 2017-06-21T05:24:13

The speed is #=2.92ms^-1#

The distance is

#d=sqrt((6-8)^2+(-4-4)^2+(2-5)^2)#

#=sqrt(4+64+9)#

#=sqrt77#

The time is #t=4s#

The speed is

#v=sqrt77/3=2.92ms^-1#