A 160 m long train crosses a 160 m long platform in 16 seconds. Find the speed of the train in Km/hr?

72

Speed = \(\frac{Distance }{Time }\)

Speed = \(\frac{\text{160 + 160} }{16}\)

Speed = \(\frac{\text{320} }{16}\)

Speed = 20 m/s

Speed in km/hr = 20 x \(\frac{ 18}{5 }\) =72 km/hr

*Note*:

To convert m/s to km/hr we multiply by \(\frac{ 18}{5 }\)

To convert km/hr to m/s we multiply by \(\frac{5}{18}\)