Question

Objects A and B are at the origin. If object A moves to `(3 ,7 )` and object B moves to `(1 ,-4 )` over `1 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

`vec v_(AB)=5sqrt 5 m/s" :angle is shown in figure"`

Explanation:

`"displacement of the objects : "AB=sqrt (2^2+11^2)`
`AB=sqrt (4+121)=sqrt 125 m`
`vec v_(AB)=sqrt 125/1`
`vec v_(AB)=5sqrt 5 m/s" :angle is shown in figure"`