An engine accelerate a car of mass `800 kg` to a speed of `72 km//h`. If the frictional force is `5 KN` per tonne, the power developed by the engine is:

An engine accelerate a car of mass 800 kg to a speod of 72 km//h . If the frictional force is 10 N per tonne, the power developed by the engine is:

A train having 60 wawgons each weight 25 tonner moving with a speed of 72 km//h . If the force 10 N per tonne , the power development is:

A car of mass 500kg moving with a speed 36kmh in a straight road unidirectionally doubles its speed in 1min . Find the power delivered by the engine.

A train weighing 100 metric ton is running on a level track with a uniform speed of 72km h^(-1) . If the frictional resistance amounts to 0.5kg per metric ton, find the power of the engine

A car of mass 800 kg is moving with a constant velocity 40 km/h. Find the net force on it.

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

A car manufacturer claims that his car can be accelerated from rest to a velocity of 10 m/s in 5s. If the total mass of the car and its occupants is 1000 kg, then the average horse power developed by the engine is