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155 മീ, 125 മീ വീതം നീളമുള്ള രണ്ട് തീവണ്ടികൾ സമാന്തരപാതകളിൽ ഒരേ ദിശയിൽ 76 km/ hr, 58 km/hr വേഗത്തിൽ സഞ്ചരിക്കുന്നു. ഇവ പരസ്പരം കടന്നു പോകുന്നതിന് വേണ്ട സമയം?

A56 സെക്കൻഡ്

B72 സെക്കൻഡ്

C96 സെക്കൻഡ്

D48 സെക്കൻഡ്

Answer:

A. 56 സെക്കൻഡ്

Read Explanation:

ദൂരം = 155+ 125 = 280 m വേഗത്തിലെ വ്യത്യാസം = 76 - 58 = 18 km/hr 18 km/hr = 18 × 5/18 = 5 m/s സമയം = ദൂരം/വേഗം = 280/5 = 56 സെക്കൻഡ്


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