A particle moves along a circular path of radius 6 ft. If its position is = 0.6 - 1 rad, where t is in seconds, determine the magnitude of the particle's acceleration when 0 = 0.76 radians. Note that the magnitude is a scalar; if you were asked for acceleration you would need to give a vector. Give answer to at least 3 decimal places. || = (the units are in ft/s)