IndiaBIX.com
Search

Aptitude - Problems on Trains

@ : Home > Aptitude > Problems on Trains > Important Formulas

Overview

  • Important Formulas

Exercise

"To err is human; to forgive, divine."
- Alexander Pope
  1. km/hr to m/s conversion:

    a km/hr = a x 5 m/s.
    18

  2. m/s to km/hr conversion:

    a m/s = a x 18 km/hr.
    5

  3. Formulas for finding Speed, Time and Distance

  4. Time taken by a train of length l metres to pass a pole or standing man or a signal post is equal to the time taken by the train to cover l metres.

  5. Time taken by a train of length l metres to pass a stationery object of length b metres is the time taken by the train to cover (l + b) metres.

  6. Suppose two trains or two objects bodies are moving in the same direction at u m/s and v m/s, where u > v, then their relative speed is = (u - v) m/s.

  7. Suppose two trains or two objects bodies are moving in opposite directions at u m/s and v m/s, then their relative speed is = (u + v) m/s.

  8. If two trains of length a metres and b metres are moving in opposite directions at u m/s and v m/s, then:

    The time taken by the trains to cross each other = (a + b) sec.
    (u + v)

  9. If two trains of length a metres and b metres are moving in the same direction at u m/s and v m/s, then:

    The time taken by the faster train to cross the slower train = (a + b) sec.
    (u - v)

  10. If 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) = (b : a)



© 2008-2014 by IndiaBIX™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy

Contact us: info@indiabix.com     Follow us on twitter!