Question

a plane is flying at 4500m above the sea level.at a particular point of time.it is exactly above a submarine floating 1200m below the sea level.what is the relative height of the submarine below the sea level? what is the relative height of the plane with respect to the submarine?

Answer 1

a plane is flying the sea level=4500m
a submarine floating below the sea level=1200m
the relative height of the plane with respect to the submarine=4500+1200=5700