alleryਇੱਕ 120 ਮੀਟਰ ਲੰਬੀ ਰੇਲਗੱਡੀ 12 ਸਕਿੰਟਾਂ ਵਿੱਚ ਇੱਕ ਟੈਲੀਗ੍ਰਾਫ ਦੇ ਖੰਭੇ ਤੋਂ ਲੰਘਦੀ ਹੈ। ਇਸਦੀ ਗਤੀ ਕਿੰਨੀ ਹੈ?
A32 km/h
B30 km/h
C40 km/h
D36 km/h
Answer & Solution
Correct answer: D. 36 km/h
ਇਹ ਆਪਣੀ ਲੰਬਾਈ 12 s ਵਿੱਚ ਕਵਰ ਕਰਦਾ ਹੈ, ਇਸ ਲਈ 120 / 12 = 10 m/s, ਜੋ ਕਿ 36 km/h ਹੈ।
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