Question

A train travelling at 126 km/h has its speed reduced to 54 km/h while it passes over 500 m. Assuming the track is straight and the retardation is uniform find the retardation How much farther will the train travel before coming to rest? (s : 112.5m)​

Answer 1

lGiven that, the train initially was travelling at 126km/hr

. Thus, let ‘u’ be the initial speed of the train.

u = 126km/hr

⇒u = 126×100060×60⇒u = 35m/sec