Question 4. Starting from rest x = 0) with no initial velocity, the acceleration of a race care is defined as F a = F +0, m = 0, (3) where the force F in Newtons and mass m in kg are positive constants and the position x is in meters. k m -x, m (i) determine the velocity v = v(t) as a function of time (ii) determine the position x = x(t) as a function of time (iii) determine the acceleration a= a(t) as a function of time