Question

Julianna walks 45 meters East, 45 meters South, and 45 meters North. What is her resultant displacement?

A. 135 meters
B. 64 meters at 45 degrees N of E
C. 45 meters East
D. 45 meters West

Answer 1

The resultant displacement is 45 m in east.

(C) is correct option.

Step-by-step explanation:

Given that,

Julianna walks 45 meters East, 45 meters South, and 45 meters North.

The direction of AB in east, it is in positive, BC in south, it is in negative and CB in north, it is in positive.

We need to calculate the resultant displacement

Using formula of resultant displacement

`D=AB-BC+CB`

Put the value in to the formula

`D=45-45+45`

`D = 45\ m`

Hence, The resultant displacement is 45 m in east.