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Distance

A body travel...

Question

A body travels 3 km towards east , 4km towards north and finally 9 km towards east. Find the resultant displacement.

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Solution

Consider right angled triangle ODC

OC²= OD² + DC²
OD= 9+3=12
DC= 4
OC²=12² + 4² =144+16=160
OC=√160

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