[" Q27.A force applied by an engine of a car of mass "200kg" cis "],[" to "25m/s" in "5" minutes.The power of the engine is: "],[" (1) "20W],[" (2) "40W],[" (3) "200W],[" (4) "400W]

A force applied by an engine of a train of mass 2.05xx10^6 kg changes its velocity from 5 m/s to 25 m/s in 5 minutes. The power of the engine is

A force applied by an engine of a train of mass 2.05xx10^6 kg changes its velocity from 5 m/s to 25 m/s in 5 minutes. The power of the engine is

A 400kg car attains a speed of 50m/s from rest in 20s. The power developed in the engine will be

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 ms^(1) . The mass per unit length of water in the pipe is 100 kgm^(-1) . What is the power of the engine? (a) 400 W (b) 200W (c) 100W (d) 800W