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Centre of Mass, Linear Momentum, Collision — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsCentre of Mass, Linear Momentum, Collision1 Mark
Question
A ball is moved on a horizontal table with some velocity. The ball stops after moving some distance. Which external force is responsible for the change in the momentum of the ball?
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Answer

Friction is responsible for reducing the speed of the ball so the ball slows down and finally stops after some distance.

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