A boy is moving on semicircle of radius 10cm.find the distance and displacement covered by the boy.
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. Distance is the total amount of meters travelled.
. Displacement is the net change in meters.
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Aɴꜱᴡᴇʀ
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Gɪᴠᴇɴ
- radius of the semi circle=10cm
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ᴛᴏ ꜰɪɴᴅ
- The distance and displacement covered by the body
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Sᴛᴇᴘꜱ
- The distance is equal to the perimeter of the semi circle
- And the displacement is equal to the diameter of the semi circle
We already saw that the diameter of the semi sicle is equal to the displacement
So displacement=20 cm
distance =Perimeter of the semi circle (top circle part alone)
as we saw already the perimeter is the distance so it is equal to 62.8 cm
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