Question

Objects A and B are at the origin. If object A moves to `(8 ,5 )` and object B moves to `(9 ,-2 )` over `2 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

`"the velocity of B from perspective of A : "3,54" m/s"`
`"angle have shown as the gold color :"278,13^o`

Explanation:

`"displacement of B from perspective of A is:"`
`AB=sqrt((9-8)^2+(-2-5)^2)`
`AB=sqrt(1^2+(-7)^2)`
`AB=sqrt(1+49)`
`AB=sqrt50`
`AB=7,07 " m"`

`v=bar(AB)/(time)`

`v=(7,07)/2`

`v=3,54 " m/s"`