allery54 કિમી/કલાકની ઝડપે 120 મીટરની ટ્રેન 60 સેકન્ડમાં તે જ દિશામાં મુસાફરી કરતી 180 મીટરની ટ્રેનને ઓવરટેક કરે છે. ટ્રેનની ગતિ ધીમી?
A36 km/h
B30 km/h
C40 km/h
D45 km/h
Answer & Solution
Correct answer: A. 36 km/h
સંબંધિત ગતિ છે (120 + 180)/60 = 5 m/s;
ધીમી ટ્રેન 15 − 5 = 10 m/s = 36 km/h પર ચાલે છે.
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