7) What is the speed of a train of 80 metre long train passes a railway
station platform of 120 metres length in 20 seconds? | एक 80 मीटर लम्बी ट्रेन
की गति क्या होगी, जो 20 सेकण्ड में 120 लम्बे प्लेटफॉर्म से गुजरती है?
fast answer?
A) 30km/hour | 30 किमी/घण्टे
B) 32 km/hour | 32 किमी/घण्टे
००००
C)34 km/hour | 34 किमी/घण्टे
D) Change in momentum/Time | संवेग में परिवर्तन/समय
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