Respuesta :

It is very interesting step about Relative velocity. Actually, when you'll see the speed of fly in relation to ground, then it's speed would be 65 mph as train is traveling by that speed but if a person in on Train, then fly is at rest for him

Hope this helps!
studd
Depends on the area of relativity, to the ground yes it's going 65mph , to the train itself no it is still