Question

Objects A and B are at the origin. If object A moves to `(-3 ,8 )` and object B moves to `(-6 ,-1 )` 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.

Answer 1

`"see animation"`
`"the velocity of B from perspective of A :" v=3,16" m/s"`

Explanation:

`Delta x=-6-3=-3" m"`
`Delta y=-1-8=-9" m"`
`"displacement between the points A and B:"`
`a=sqrt(Delta x^2+Delta y^2)`
`a=sqrt((-3)^2+(-9)^2)`
`a=sqrt(9+81)`
`a=sqrt90`
`a=9,49" m"`
`v=a/(Delta t)`
`v=(9,49)/3`
`v=3,16" m/s"`