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3. How will you compare the movement of the dry cell, rubber ball and marble on a grassy field and on a cemented floor?
4. Why do the objects slow down or stop as they move along different surfaces?
3. How will you compare the movement of the dry cell, rubber ball and marble on a grassy field and on a cemented floor?
4. Why do the objects slow down or stop as they move along different surfaces?
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Answer:
4.Friction is a face that accurs when two surface slide past one another.The force of friction opposes the motions of an object,causing moving object to lose energy and slow down.
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