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Friction is a force that slows down a motion and prevents slipping.
It helps in following ways:
1. It helps us to walk properly on the ground. It prevents our slipping. The areas covered with ice have little friction,so we often slip on the ice.
2. It helps us to write. we cannot hold a pencil when there is no friction.
3. It also helps the vehicles to move on the road. Without friction our  vehicles would run continuously and slip down 
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