Use the Newton-Raphson method to determine the root of 1 = voe-(c/m)t mg (1 - e-(c/m)t) 25 where vo = 55 m/s, c= 15 kg/s, m= 80 kg, and the initial guess of t= 3 s. (Round the final answers to four decimal places.) points The root of the equation at the first iteration is The root of the equation at the second iteration is Hint The root of the equation at the third iteration is