1.

A train weighing 196 tonnes experiences a frictional resistance of per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is

A. 5 10 m/sec
B. 10 5 m/sec
C. 5 3 m/sec
D. 3 5 m/sec.
Answer» B. 10 5 m/sec


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