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3. 30मी/सेकेंड की चाल किमी/घंटा में होगी
(a) 300 किमी/घंटा (b) 13 किमी/घंटा
(c) 108 किमी/घंटा
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c) 108km/h
Step-by-step explanation:
30m/s = 30 × 1m ÷ 1s
= 30 × (1/1000) km ÷ { 1/(60 ×60 )hour}
= 30× 60× 60 ÷ 1000 km/h
= 108km/h
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