What is the meaning for law of conservation of momentum

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance

When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?

Ineed with my physics homework i can’t find it on google