Question

on a square track of Edge length hundred metres and athlete starts from one corner and read diagonally opposite to Corner find out the distance and magnitude

Answer 1

Answer:

A man walks on a square track of side 20m. He has completed two and half rounds after starting from the corner. Find the distance and displacement?

1 Answer



Tuhin Mitra, Knows something about mathematics

Updated May 30, 2018 · Author has 599 answers and 222.8K answer views

First talking about distance covered :

Two rounds means… perimeter of the square ×2+perimeter2×2+perimeter2

⟹80(perimeter)×2+802⟹80(perimeter)×2+802

∴ distance=200 m∴ distance=200 m

And now displacement…

Simply if someone covers no. Of rounds in natural number in any closed fig. …his displacement is 00

Now the person is standing at the initial point..

If he moves half round foroward… then he'll stand at the diagonally opposite side of the square.

So the displacement is equal to→→ the length of the diagonal of the square path=2–√×20=2×20

∴displacement=202–√m

Explanation:

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