উত্তর ও সমাধান
সঠিক উত্তর:
180 km/hr
ব্যাখ্যা / উদাহরণ / সমাধান:
Length of the train = 150 m. Speed of the man = 2 km/hr. Relative speed = 150 / 3 = 50ms^-1 = 50 x 18/5 = 180 km/hr. Relative speed = Speed of the train - Speed of the man. 180 = Speed of the train - 2. Speed of the train = 180 + 2 = 182 km/hr.
সঠিক উত্তর
180 km/hr
ব্যাখ্যা / উদাহরণ / সমাধান
Length of the train = 150 m. Speed of the man = 2 km/hr. Relative speed = 150 / 3 = 50ms^-1 = 50 x 18/5 = 180 km/hr. Relative speed = Speed of the train - Speed of the man. 180 = Speed of the train - 2. Speed of the train = 180 + 2 = 182 km/hr.