Question
A train crosses a pole in 12 sec, and a bridge of length
170 m in 36 sec. Then the speed of the train is:Solution
Let the speed of train be s m/sec and length be l. A train crosses a pole in 12 sec. Distance = speed time l = 12s ---(1) A train crosses a bridge of length 170 m in 36 sec. Total length = l + 170 l + 170 = 36s ----(2) Put the value l in eq (2), 12s + 170 = 36s s = 170/24 = 7.08 m/sec = 7.08 $$\times \frac{18}{5} = 25.5 m/sec Speed of the train is 25.5 m/sec.
What significant economic forecast did UNCTAD make for India in 2024?
In which year the capital of United Provinces shifted from Allahabad to Lucknow?
On July 1st, 2024 the state Haryana has introduced how many new criminal laws by replacing the old ones?
Which Schedule of the Indian Constitution details the forms of oaths or affirmations for various constitutional positions?
Who penned the memoir "Land Guns Caste Woman," narrating the compelling journey of a Tamil Brahmin woman striving to overcome the confines of her caste ...
Which type of energy is transformed into electrical energy in wind power generation?
Who was given the title 'Rashtra Kavi' by Mahatma Gandhi?
Shri Sanatan Dharma Mandir is situated in which of the following district of Uttar Pradesh?
India’s first indigenously developed hydrogen fuel cell ferry was deployed for service at which place of Uttar Pradesh?
The 2nd phase of 36 ‘Saansad Khel Mahakumbh 2022-23’ has been inaugurated in which district of the state Uttar Pradesh?
Relevant for Exams:
