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12-79. The particle travels along the path defined by the parabola y = 0.5x². If the component of velocity along the x axis is v, = (5t) ft/s, where t

is in seconds, determine the particle's distance from the origin O and the magnitude= 0.of its acceleration when t = 1 s. When t0, x 0, y =

Fig: 1

Fig: 2