Frederica is sitting on a moving train. she watches the telephone poles fly past. she knows that the poles in this area are 1/4 mile apart. every minute, 5 poles pass her. in the reference frame of the poles, how fast is the train moving?
a.
2 miles/min
b.
1.3 miles/min
c.
0.80 miles/min
d.
0.50 miles/min