CBSE › Class 9 › Science › How Forces Affect Motion (Class 9 NCERT New)
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1. Without friction, it would be difficult to walk or drive a car.

2. Field forces include gravity and magnetism.

3. Balanced forces always cause motion.

4. Reducing friction can be achieved by using lubricants.

5. Why is friction considered both useful and harmful?A student says: “Friction is not important in our daily life.”What do you think?

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