A seal is on an ice shelf floating at 17 km/h N40oW when it
encounters a current of 5km/h from the south. On a nearby
shore a polar bear is walking at 10 km/h S70oE. What is the
velocity of the seal relative to the polar bear?
okay - one more.
These are all just variations on adding vectors.
17@N40W = -10.93i + 13.02j
so the bear's actual vector is -10.93i + 18.02j
Seal: 10@S70E = 9.40i - 3.42j
so seal relative to bear is seal-bear
= 20.33i - 16.44j
= 11.96@E39S