Question 919938

Find the time it takes to cover 1 mi at 63 mph speed in seconds
{{{1/63}}} * 3600 = 57.143 sec
your relative speed to the train: 63 + 28 = 91 mph
Find how far you travel (in feet) in 1 sec at 91 mph
{{{(91*5280)/3600}}} = 133.467 ft
Find how many ft in 57.143 sec at this speed
57.143 * 133.46 = 7626.7 ft is the length of the train