OA OB Oc a t ft sec 5 2 The data for the acceleration a t of a car from 0 to 6 seconds are given in the table above If the velocity at 7 0 is 11 feet per second the approximate value of the velocity at 7 6 computed using a left hand Riemann sum with three subintervals of equal length is A 26 ft sec B 30 ft sec C 37 ft sec D 39 ft sec OD 8 3 E 41 ft sec Office Online Fr