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CBSE Class 9 Answered

What will be the distance and displacement covered by Harry if he moves 1m towards the north and then 2 m towards east.
Asked by Topperlearning User | 09 Jun, 2016, 02:48: PM
answered-by-expert Expert Answer
 
begin mathsize 12px style Distance space travelled space equals space AB space plus space BC space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 1 straight m space plus space 2 straight m space
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 3 straight m space space space
Displacement comma
AC space equals space square root of AB to the power of 2 space end exponent plus space BC squared end root
space space space space space space space equals space square root of 1 squared space plus space 2 squared end root
space space space space space space space equals space square root of 5
space space space space space space space equals space 2.24 space straight m end style
Answered by | 09 Jun, 2016, 04:48: PM

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