What is the speed of an object that travels from $( 7,-8,1)$ to $( -1,4,-6 )$ over $2 s$ ?

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What is the speed of an object that travels from $( 7,-8,1)$ to $( -1,4,-6 )$ over $2 s$ ?

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Answer 1 · 2016-03-01T17:02:54

$v~=8,02 m/s$

Explanation:

$"1- we must find distance between the point of (7,-8,1)"$ $" and (-1,4,-6)"$
$Delta s=sqrt((-1-7)^2+(4+8)^2+(-6-1)^2)$
$Delta s=sqrt(64+144+49)" "Delta s=sqrt257 " m"$
$"2- now, we can calculate speed using : " v=(Delta s)/(Delta t)$
$v=sqrt 257/2$
$v~=8,02 m/s$

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What is the speed of an object that travels from $( 7,-8,1)$ to $( -1,4,-6 )$ over $2 s$ ?

1 Answer

Explanation:

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What is the speed of an object that travels from ( 7,-8,1) ( 7,-8,1) to ( -1,4,-6 ) ( -1,4,-6 ) over 2 s2 s?

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What is the speed of an object that travels from $( 7,-8,1)$ to $( -1,4,-6 )$ over $2 s$ ?