140 मी. लम्बी एक रेलगाड़ी एक खम्बे को 12 सैकिण्ड में पार करती है। तो रेलगाड़ी की चाल
प्रति घण्टा है:
(Army GD-2011)
(b) 42 कि.मी.
(c) 34 कि.मी.
(d) 43 कि.मी.
(a)24 कि.मी.
Answers
Answered by
0
Answer:
I don't know the right answer
Answered by
2
Answer:
1 km = 1000 m, 140 m = 0.14 km
12 sec = 12 ÷ (60 x 60) = 0.00333
= 0.14/0.00333 = 42 km
Step-by-step explanation:
Option (b) 42 km is the correct answer
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