Two trains running on parallel track with lengths 140 m and 40 m respectively. When travelling in opposite directions they are observed to pass each other in 10 seconds, but when they are running in the same direction at the rates as before, the faster train passes the other in 20 seconds. Find the speed of the two trains in km per hour.
Let R1 = Relative speed, when moving in same direction = (140 + 40)/20 = 9 m/s R2 = Relative speed, when moving in opposite direction = (140 + 40)/10 = 18 m/s Now, Speed of faster train = (R1+R2)/2 = (9 + 18)/2 = 13.5 m/sec = 13.5 x 18/5 = 48.6 km/hr Speed of slower train = (R2-R1)/2 = (18-9)/2 = 4.5 m/s = 4.5 x 18/5 = 16.2 km/hr
Which country became India's second-largest supplier of liquefied natural gas (LNG) in 2023, overtaking the UAE?
Who has been elected as the new President of Vietnam?
Where did Dr . Mansukh Mandaviya, Union Minister of Health and Family Welfare, lay the foundation stone for 2 Critical Care Blocks and a BSL - 3 Laborat...
National Institute of Fisheries Post Harvest Technology and Training (NIFPHATT), has organized a workshop on Matsya Sampada Jagrukta Abhiyan to promote ...
In which city did the 63rd gathering of the Central Geological Programming Board (CGPB) take place, with Shri V.L. Kantha Rao, Secretary of the Ministry...
Recently a “friendship hospital'' has been handed over to which country by India?
What is the primary aim of the 'DHARMA GUARDIAN' joint military exercise between India and Japan?
Which of the following statements about the cosmic explosion AT2021lwx is NOT true?
What is the objective of the GOBARdhan initiative launched by the Government of India?
Which organization imposed monetary penalties on Manappuram Finance, Ola Financial Services, and Visa Worldwide for non-compliance with regulatory guide...
