An airplane starts from a and flies to b at a constant speed. after reaching b it returns to a at the same speed. there was no wind. assuming there was a wind from a to b of constant magnitude, when will the round trip take more time – when there is a wind or when there is no wind? assume that the wind speed is less than that of the plane.
1. longer round trip time when there is a constant wind.
2. more information is needed.
3. the same time in both cases.
4. longer round trip time when there is no wind.