allery120 മീറ്റർ നീളമുള്ള ഒരു തീവണ്ടി 12 സെക്കൻഡുകൾക്കുള്ളിൽ ഒരു ടെലിഗ്രാഫ് തൂണിലൂടെ കടന്നുപോകുന്നു. അതിന്റെ വേഗത എത്രയാണ്?
A32 km/h
B30 km/h
C40 km/h
D36 km/h
Answer & Solution
Correct answer: D. 36 km/h
ഇത് സ്വന്തം നീളം 12 s ൽ ഉൾക്കൊള്ളുന്നു, അതിനാൽ 120 / 12 = 10 m/s, അതായത് 36 km/h.
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