A person moves 30 m north, then 20 m east then 30 root 2 m south west. His displacement from the original position is

Asked by Anil | 28th May, 2017, 06:09: PM

Expert Answer:

The path of the particle is shown in the following figure.
 
 
begin mathsize 12px style From space the space figure comma
straight y squared equals 30 squared plus 20 squared
straight y squared equals 1300
straight y equals square root of 1300 equals 10 square root of 13 space straight m
Hence comma space the space displacement space is space AD
AD equals 30 square root of 2 minus 10 square root of 13 equals 42.42 minus 36.06
AD equals 6.36 space straight m end style
 

Answered by Romal Bhansali | 29th May, 2017, 10:36: AM