1) The particle moves along the positive X-axis; hence its velocity varies as V=??x, where ? is a positive constant. Assuming that at the moment t=0, the particle was located at the point ?=0, please 1) The particle moves along the positive X-axis; hence its velocity varies as V=??x, where ? is a positive constant. Assuming that at the moment t=0, the particle was located at the point ?=0, please find:a) How does the velocity and...