The correct answer is:  The train takes 3 seconds to pass the signal post. See the diagram below that shows the motion of the train.  The star shows the front (engine) of the train.The time of passing starts from time T2T 2​ and lasts till time T3T 3​ . Let this time be = T3T 3​ - T2T 2​ = T seconds.Then the distance moved by the engine (star on the train) during the passing time is = 20 m/s ×× T seconds = 20T metersBut from the diagram it is clear that this distance is the length of the train = 60 meters. So:  20 ×× T =  60  ⇒⇒  T = 3 seconds.

A train of length 60 meters is running with a velocity of 20 m/s.  The engine driver sees that a signal post 440 meters is red, but before he pulls the brakes it turns green and so the trains maintain its velocity.  Find the time the train takes to pass the signal post.

When my friend, Prof. Rajesh Sadagopan was travelling to Bangalore, he found that his train, which was moving uniformly, passed a telegraph post in 14 seconds and a platform 210 m long in 42 seconds.  Find the length of the train.

The position of a model train, in feet along a railroad track, is given bys(t) = 2.5t + 19after t seconds.(a) How fast is the train moving? ft/sec(b) Where is the train after 4 seconds? feet along the track(c) When will the train be 34 feet along the track?t = sec

A child is standing on the platform of a station, watching the trains.A train travelling at 30 m/s takes 3 s to pass the child. What is the length of the train?

A train covers a certain distance at a speed of 60 kmph in 20 hours. To cover the same distance in 3 hours, It must travel at the speed ofA)600kmphB)300kmphC)400kmphD)350kmph