At 12pm, ship A is 150km west of ship B. Ship A is sailing west at 35km/h and ship B is sailing north at 25km/h. How fast is the distance between ships changing at 4:00 pm.

Just lost on this question, not sure if its because im tired or what. I know the formula that will have to be diffrentiated is pythagorean theorem, and that we are looking for the d(hypotenuse)/dt

Question

At 12pm, ship A is 150km west of ship B. Ship A is sailing west at 35km/h and ship B is sailing north at 25km/h. How fast is the distance between ships changing at 4:00 pm.

Just lost on this question, not sure if its because im tired or what. I know the formula that will have to be diffrentiated is pythagorean theorem, and that we are looking for the d(hypotenuse)/dt

anonymous · Answer

Find da/dt and db/dt
Then apply Pythagoras' theorem for dz/dt

anonymous · Answer

|dw:1434444259548:dw|