1. The problem statement, all variables and given/known data A freight train has a speed of 28.7 m/s at a given instant and 10.8 seconds later its speed is 23.7 m/s. What is the train's acceleration? What additional time would be necessary to bring the train to a complete stop, if it continues to slow at the rate in the previous question? What total distance is travelled in stopping during the entire slowing phase?