alleryवही 180 m लंबी ट्रेन 54 km/h की चाल से चलते हुए अपनी ओर 18 km/h की चाल से दौड़कर आ रहे एक जॉगर से मिलती है। उसे पार करने में कितना समय लगेगा?
A12 सेकंड
B10 सेकंड
C8 सेकंड
D9 सेकंड
Answer & Solution
Correct answer: D. 9 सेकंड
सापेक्ष चाल = 54 + 18 = 72 km/h = 20 m/s, अतः समय = 180 / 20 = 9 सेकंड।
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