Why do laws of motion matter?

Why do longer pipes produce a higher frequency sound? What is the relationship between amplitude and waves? What is greater 6 grams or 7000 kilograms? Why does the elastic band make a sound when plucked? Why does the intensity of light decrease as the distance from the source increases? Can two object have the same speeds but different velocities? What two body systems most directly cause the arm to bend? What are 3 examples of sound absorption? What are the precautions in specific heat capacity experiment? Since all objects are absorbing energy from their surroundings why does not the temperature of all objects keep increasing continuously? When a 12 V battery ie a battery of EMF 12 V is connected across a lamp with a resistance of 6.8 ohms the potential difference across the lamp is 10.2 V Find the current through the lamp? What refers to the density of people and objects within a given space? What electric current in a metal consist of moving? What kind of waves cause particles in rock to move back and forth? Whenever energy appears in one system? What is the approximate mass of a protractor? Are all models reductions of the original object? How is sound produced by human beings? Can toughened and laminated glass have waves? What happens as a result of an increase in the intensity of a soundwave?

Why do laws of motion matter?