Question

A train passes 300 m long platform in 30 s and it crosses a signal on the station in 12 s. Find:
a) the speed of the train in km/h.
b) the length of the train.​​

Answer 1

Step-by-step explanation:

let length of train be x meter..

so it travels x+300 m in 30 sec and goes the length of itself in 12 sec that is x in 12 sec..so it goes the length of platform in 30-12=18 sec..then speed is 300/18=50/3 m/s..

(i)50/3 × 18/5=60 km/h..

(ii) length =50/3 ×12=200 m..