Subject :NSO Class : Class 10
A train starting from rest at one station, accelerates uniformly and attains a speed v after sometime. After travelling at this speed for sometime, it retards uniformly and stops at the next station. If R be the uniform resistance of the given track and the duration of the uniform motion is just half the total journey time, the average power supplied by the train engine is
A 
B 
C 
D 
wrong question