Question
1000 metres long train crosses a man who is moving in
the same direction with a certain speed, in 40 seconds. If the same train can cross a tree in 20 seconds with the same speed, then find the speed of the man.Solution
Speed of train = 1000/20 = 50 m/sec Let the speed of the man be ‘s’ m/sec Relative speed of the train = (50 – s) m/sec According to the question, (50 – s) = 1000/40 Or, s = 50 – 25 = 25 Therefore, speed of the man = 80 m/sec
Weight of a body on the surface of the earth is W₁. The weight of the same body is W2, at a height of 500 metres above the surface, and W3 at a depth ...
Which of the following pairs is not correctly matched in respect of Manipur?
What is the minimum age for employment of children in a factory under the Factories Act 1948?
Which one of the following is the first book in which the transactions of a business unit are recorded ?
Who has topped the category of large states in the recently released India Justice Report 2022?
How is self-generated goodwill amortized in accounting?
Who is the author of Vikramakacharita?
Which of the following statements is/are correct about Open Market Operations?
I. It refers to the mechanism through whic...
Who can raise complaints with the Insurance Ombudsman?
The ratio of length to breadth of a rectangle is 7:5. If the sum of the length and breadth of the rectangle is 48 cm, then find the area (cm2...
Relevant for Exams:
