1. A train, 25 metres long, runs at the rate of 30 Km. an hour. In wha

1.	1. A train, 25 metres long, runs at the rate of 30 Km. an hour. In what time will it pass a telegraph post?[give explanation of this sum otherwise I will not make you brainlistor I will not give you like ok a I will give you report]
Answer» ANSWER: DISTANCE = 30 km = 30000 m time = 1 hr = 3600 second so speed = 30000/3600 = 25/3 m/s so time TAKEN for 25 m time = 25/(25/3) = 3 second

1. A train, 25 metres long, runs at the rate of 30 Km. an hour. In what time will it pass a telegraph post?[give explanation of this sum otherwise I will not make you brainlistor I will not give you like ok a I will give you report]

Answer»

time = 1 hr = 3600 second

so speed = 30000/3600 = 25/3 m/s

so time TAKEN for 25 m

time = 25/(25/3)

= 3 second