Question

In diving to a depth of 645 m, an elephant seal also moves 590 m due east of his starting point. What is the magnitude of the seal's displacement?

Answer 1

Draw a diagram and you'll see the seal has moved 645m vertically (let's say from A to B) and 590m horizontally (from B to C). The displacement of the seal is AC.

Notice now that ABC is a right angled triangle of which AC is the hypotenuse. Now
AC^2 = AB^2 + BC^2 so AC = ....

Answer 2

thank you so much !

Answer 3

Give me a 'good answer' if you don't mind ;-)

Answer 4

thank you so much !

Answer 5

i did :)