A thief seeing a policeman from a distance of 550 metres started running at a speed of 9 km/h. The policeman began to chase him immediately, at a speed of 11 km/h and the thief was caught. What is the distance run by the thief before he was caught by the policeman?
2475 metres
The correct answer is 2475 metres.
This speed determines how quickly the distance between them changes. When two objects move in opposite directions , their relative speed is the sum of their speeds. This speed determines how quickly the distance between them decreases or increases. Understanding these concepts is crucial for solving problems involving motion, races, and chases, like this thief and policeman question.
Similar Questions
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Important Questions from Relative Speed
- Ankur jogs on a circular track X at $1 \frac{2}{3}$ m/s and Mahima jogs on track Y at $2 \frac{1}{12}$ m/s. The total length of Tracks X and Y is 0.325 km. Ankur makes 9 rounds of track X in the same time Mahima makes 5 rounds of track Y. The time taken (in seconds) by Mahima to complete one round of track X is:
- Two places, A and B are 3710 kms from each other. A train leaves from A to B at the same time another train leaves B to A. The two trains meet at the end of 35 hours. If the train travelling from A to B travels 35 kmph faster than the other. Find the speed of the faster train. (In kmph)
- A truck, 1575 metres long is running at a speed of 109 km/hr. How many seconds will it take to cross a 1475 metres long train running in the same direction at a speed of 79 km/hr?
- A truck, 1600 metres long is running at a speed of 112 km/hr. How many seconds will it take to cross a 1500 metres long train running in the same direction at a speed of 82 km/hr?
- Two friends 10 km apart start running towards each other at speeds of 10 km/hr and 14 km/hr respectively. After how much time will they meet each other?
