Problems On Train - Aptitude Concepts (Important Facts And Formulae)
IMPORTANT FACTS AND FORMULAE
1. a km/hr= (a* 5/18) m/s.
2. a m / s = (a*18/5) km/hr.
3. Time taken by a train of length 1 metres to pass a pole, a standing man, a signal post is equal to the time taken by the train to cover 1 metres.
4. Time taken by a train of length 1 metres to pass a stationary(static) object of length b metres is equal to the time taken by the train to cover (1 + b) metres.
5. Let two trains or say two bodies are moving in the same direction at u m/s and v m/s,
where u > v,
then their relatives speed =
(u - v) m / s.
6. Let two trains or say two bodies are moving in opposite directions at u m/s and v m/s,
then their relative speed is =
(u + v) m/s.
7. If the two trains of length a metres and b metres are moving in the opposite directions at u m / s and v m/s, then in this case time taken by the trains to cross each other =
(a + b)/(u+v) sec.
8. If the two trains of length a metres and b metres are moving in the same direction at u m / s and v m / s, then in this case time taken by the faster train to cross the slower train =
(a+b)/(u-v) sec.
9. If the two trains (or bodies) start at the same time from points A and B towards each other and after crossing they take a and b sec in reaching B and A respectively,then
(A's speed) : (B’s speed) = (b1/2: a1/2).
Mainly Used Formulae
Share This:
Shubham Prajapati
I'm Shubham Prajapati. A full time Blogger, here at IqMantra I mainly write post on Latest Jobs information. You can connect me on various social networking site by clicking on the links given below.
Social Links: