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प्रश्न
Why does a rolling ball on a playground eventually come to a halt?
विकल्प
Because it loses energy to gravity
Because friction opposes its motion
Because the ground becomes harder
Because air pressure increases
MCQ
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उत्तर
Because friction opposes its motion
Explanation:
Friction is a force of opposition that acts between surfaces in contact, opposing the motion of the ball until it stops.
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