•always use significant figure rules. remember that these rules apply to all numbers that are measurements.
during a treasure hunt, cody walks 45.0 m south and 7.50 m to the west. what single straight-line displacement could
cody have taken to reach the treasure? (remember that magnitude and angle and direction are all needed for your
answer)

45.6 m at south of west

Explanation:

Let's take the north-south direction as y-direction (with south being positive) and east-west direction as x-direction (with west being positive). Therefore, the two components of Cody's motion are:

- (south)

- (west)

Since they are perpendicular, the magnitude of the net displacement can be calculated by using Pythagorean's theorem:

The direction instead can be measured as follows:

And given the convention we have used, this angle is measured as south of west.

he made 11 calls in one day