A 1250 kg car skids to a stop from a speed of 35 m/s in 4.5 s. What is the magnitude of the net force acting on the car?

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

wavelength divides in half and speed stays the same.