No, it’s not. “North” is a two dimensional direction on the surface of the earth. But we live, and can throw babies, in three dimension. Therefore you need to specify the inclination as well. “56 furlongs per minute, north, 0.3 radians” would suffice.
How would you frame a sentence here for velocity then?
Velocity is speed and direction. So “16.4 mph north” is sufficient.
No, it’s not. “North” is a two dimensional direction on the surface of the earth. But we live, and can throw babies, in three dimension. Therefore you need to specify the inclination as well. “56 furlongs per minute, north, 0.3 radians” would suffice.
It is not. It’s not in metric.
16.4 MPH in that direction?
I find the absurdity of the joke would be better if the mother asked, “In which direction?”
To explain this joke: velocity is a vector quantity, so it has a magnitude (speed) and a direction, which mom failed to indicate, shame on her.