An airplane flies north and south and then flies upwards then net displacement is:
Step 1: Given
Distance travelled in North:
Distance travelled in the South:
Distance travelled Upwards:
The motion of the plane could be better understood by the following diagram:
Step 2: Formula Used
Step 3: Calculate the displacement of the plane
Calculate the distance from point A to point C by subtracting the distance of CB from AB
Calculate the distance from point A to point D using the hypotenuse theorem
Hence, the net displacement is .
Thus, option (B) is correct.