Input tf-to as 1.4 seconds, then switch to mi and h units. Enter vo as 632 mi/h and vo as 0 mi/h. Result: Distance is .122 miles and acceleration is -16.25 mi/hh. Converting back to meters and seconds this gives 198 meters and a deceleration of -202 m/ss or about 20 g's (where g = 9.8 or about 10 m/ss).