Question

An electric train is going with the speed 40 km/hr and its electric power is thrice of friction force.
When electric power is twice then due to any reason its friction force becomes 1+1/2 times. Find its current speed?

Answer 1

Answer: given, speed (d)=40 km/hr

I hope it help you

Answer 2

Answer:

answer is 40km

hope it helps you