allery120 میٹر لمبی ٹرین 12 سیکنڈ میں ٹیلی گراف کے کھمبے سے گزرتی ہے۔ اس کی رفتار کیا ہے؟
A32 km/h
B30 km/h
C40 km/h
D36 km/h
Answer & Solution
Correct answer: D. 36 km/h
یہ 12 s میں اپنی لمبائی کا احاطہ کرتا ہے، لہذا 120 / 12 = 10 m/s، جو کہ 36 km/h ہے۔
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