- A120 m, 15 km/h
- B180 m, 81 km/h
- C120 m, 54 km/h
- D150 m, 54 km/h
Step-by-Step Solution
and → m/s km/h, m. (15 km/h forgets that 15 is in m/s.)
Answer: C) 120 m, 54 km/h
Standing on a 180 m railway bridge, Gopal notices that a train takes 20 seconds to cross the bridge but only 8 seconds to pass him. What are the train's length and speed?
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