three people are standing by maintaining social distancing i. e 6 feet from each other. A doctor checks one person first then go to the other standing towards the east and then third person towards north. what will be the resultant displacement covered the doctor?​

8.5 feet.

Explanation:

A sketch of the position of the three people gives a right angled triangle. The hypotenuse of the triangle gives the resultant displacement, while the two other sides are 6 feet each.

The resultant displacement, R, is the overall displacement covered by the doctor. This can be determined by;

R =

where: = 6 feet and = 6 feet.

Thus,

R =

  =

R = 8.49

The resultant displacement covered by the doctor is 8.5 feet.

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