Why is physics used to study car crashes?

If a graduated cylinder has a current water level of 30 ml and you add an object which causes the water level to rise 53 ml what is the volume of the object you placed in the water? When energy gets converted from one form to another is there any loss? How many btus will it take to raise 50 pounds of ice at 32 degrees to water at 160 degrees? What type of heat transfer is a boiling kettle on a stove an example of radiation? 2 differences between uniform and non uniform motion? How are Convergence of the eyes when focusing on a nearby object is achieved by the means of? How do you convert 25 uL to mL? How do the properties of waves affect the speed frequency and period of waves? How many seconds is in 48 hours? Calculate the work needed to lift a 90N block of ice a vertical distance of 3m What PE does it have? What type of energy from a bicycle give off? How does newton explain the difference between active principles and occult qualities? What other than the light blob did Thomas Edison invent? What electrical output has a flapping motion? How much is 34.5kg in stone? What factor measures inertia? Would scrap metal be attracted to electromagnet? What is the difference between an optical correct mirror and a rue image mirror? Explain the three methods of heat transfer as they work to heat the earth and the earths atmosphere? What is a physical description of Catherine from rules?

Why is physics used to study car crashes?