Speedometer readings for a motorcycle at 12-seconds intervals are given in the table. t (sec) 0 12 24 36 48 60 v (ft/sec) 23 22 24 30 26 27 (a) Estimate the distance, in feet, traveled by the motorcycle during the time interval from 0 to 60 seconds using the velocities at the beginning of the time intervals. (b) Give another estimate using the velocities at the end of the time periods