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200 മീ. നീളമുള്ള ഒരു ട്രെയിൻ 900 മീ. നീളമുള്ള ഒരു തുരങ്കം കടന്നത് 44 സെക്കൻഡ് കൊണ്ടാണ്. എങ്കിൽ ട്രെയിനിന്റെ വേഗം മണിക്കൂറിൽ എത്ര കിലോമീറ്റർ?

A60

B70

C80

D90

Answer:

D. 90

Read Explanation:

ആകെ ദൂരം = 900 + 200 = 1100 സമയം = 44 സെക്കൻഡ് വേഗത = ദൂരം/ സമയം = 1100/44 = 25m/s 25 × 18/5 = 90km/hr


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