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

Question

Conrad

Today, 08:34

+1

Answers (1)

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Isaiah Leonard · Answer 1

B

1 mile=4 poles

if 5 poles pass by than she's going around 1.25 miles per min

rounded up = 1.3 mil/min

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/minB.1.3 miles/minC.0.80 miles/minD.0.50 miles/min