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A body travels a distance of $15 m$ from A to B and then moves a distance of $20 m$ at the right angle to AB. Calculate the displacement of the body?

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20 m

15 m

25 m

26 m

answer is C.

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Detailed Solution

A body travels a distance of

15 m

from A to B and then moves a distance of

20 m

at the right angle to AB.
Question Image

Let the body moves

20 m

from B to C.
Distance

= AB + BC

= 15 + 20

= 35 m

Displacement,

AC = \sqrt{{AB}^{2} + {BC}^{2}}

= \sqrt{15^{2} + 20^{2}}

= \sqrt{625}

= 25 m

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