a train initially moving with a velocity of 10m/s slows down at 1m/s2 when it is 100 meter from the platform. a) write down equations v(t) and x(t) for this train. b) how long would it take the train to complete the stop? c) where would be the train relative to the station? should it adjust its positions for the convenience of the passengers? d) what distance would it cover in this time?