Which of the following is the correct formula for finding distance (d) between two points (x1, y1) and (x2, y2)?(a) d^2 = (x2-x1)^2 + (y2-y1)^2(b) d^4 = (x2-x1)^2 + (y2-y1)^2(c) d^3 = (x2-x1)^2 + (y2-y1)^2(d) d = (x2-x1)^2 + (y2-y1) ^2I had been asked this question in an interview for job.This interesting question is from Straight Line Motion in section Motion in a Straight Line of Physics – Class 11

Which of the following is the correct formula for finding distance (d)

1.	Which of the following is the correct formula for finding distance (d) between two points (x1, y1) and (x2, y2)?(a) d^2 = (x2-x1)^2 + (y2-y1)^2(b) d^4 = (x2-x1)^2 + (y2-y1)^2(c) d^3 = (x2-x1)^2 + (y2-y1)^2(d) d = (x2-x1)^2 + (y2-y1) ^2I had been asked this question in an interview for job.This interesting question is from Straight Line Motion in section Motion in a Straight Line of Physics – Class 11
Answer» RIGHT option is (C) d^3 = (x2-x1)^2 + (y2-y1)^2 The explanation: The correct answer is d^2 = (x2-x1)^2 + (y2-y1)^2. This expression can be found out using Pythagoras theorem in Cartesian coordinate system. Build a right-angle TRIANGLE with sides PARALLEL to the axes and the hypotenuse joining the two points to construct the right-angle triangle.

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