D Question 6 5 pts An object which starts from position x=0 m and moves along a straight line with position given by, in m, x = 20t - 5+3. The object's acceleration at t=1 s is O -30 m/s/s O 0 m/s/s O +5 m/s/s O 15 m/s/s O 30 m/s/s