Question

a farmer moves along the the boundary of a square field of side 12m in 40s. what will be the magnitude of displacement and distance travelled by him after 120s

Answer 1

boundary = perimeter
thus, in 40 s he moved 12×4 = 48 metres
distance covered in 120 secs = 48×3 = 144 m
Displacment = 0 metres since his final and initial point it's same

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