AP Police SI practice question
A cyclist travels 90 km at an average speed of 30 km/h and immediately returns along the same route, covering the return distance in 2 hours. What is the average speed of the cyclist for the entire journey, in m/s?
From a AP Police SI Science practice set · Science
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Correct answer: (B) 10 m/s
Time for onward journey = 90/30 = 3 h. Total distance = 180 km. Total time = 3+2 = 5 h. Average speed = 180/5 = 36 km/h = 36 x (1000/3600) = 10 m/s.
हिंदी में प्रश्न
एक साइकिल चालक 30 किमी/घंटा की औसत चाल से 90 किमी की यात्रा करता है और उसी मार्ग पर तुरंत लौटता है, वापसी की दूरी 2 घंटे में तय करता है। पूरी यात्रा के लिए साइकिल चालक की औसत चाल m/s में क्या है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
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सही उत्तर: (B) 10 m/s
जाने में समय = 90/30 = 3 घंटे. कुल दूरी = 180 किमी. कुल समय = 3+2 = 5 घंटे. औसत चाल = 180/5 = 36 किमी/घंटा = 36 x (1000/3600) = 10 m/s.
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