A train moves past a pole and a tunnel completely in 3s and 15 s, respectively. The length of the tunnel is 480 m. What is the speed of the train?

A train moves past a pole and a tunnel completely in 3s and 15 s, resp

1.	A train moves past a pole and a tunnel completely in 3s and 15 s, respectively. The length of the tunnel is 480 m. What is the speed of the train?
A.	4 m/s
B.	40 m/s
C.	30 m/s
D.	60 m/s
Answer» C. 30 m/s

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A train moves past a pole and a tunnel completely in 3s and 15 s, respectively. The length of the tunnel is 480 m. What is the speed of the train?

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