Question

Objects A and B are at the origin. If object A moves to `(2 ,3 )` and object B moves to `(5 ,8 )` over `4 s`, what is the relative velocity of object B from the perspective of object A?

Answer 1

`v=6/4=1,5" unit/s"`

`angle=59,04^o`

Explanation:

`"displacement of B from perspective of A:"`
`AB=sqrt((5-2)^2+(8-3^2))`
`AB=sqrt(3^2+5^2)=sqrt(9+25)=sqrt36`
`AB=6" unit"`

`v=bar(AB)/t`

`v=6/4=1,5" unit/s"`

`angle=59,04^o`