Martha travels 3.5km south before heading 2 km west . The journey takes 32 min Calculate the magnitude and direction (true bearing) of the displacement of martha

Calculate the magnitude of the average speed of martha

Calculate the magnitude of the average velocity of martha​

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.

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."