Define watt. Express kilowatt in terms of joule per second. A 150 kg car engine develops 500 W for each kg. What force does it exert in moving the car at a speed of 20 m//s ?

A car-engine of mass 150 kg spends 500 W power for 1 kg mass. How much force should be applied by the engine to run the car at uniform speed 20ms^(-1) ?

When an automobile moves with constant speed down a highway , most of the power developed by the engain is used to compensate on the car by the air and the road, friction forces exerted on the car by the air and the road. If the power developed by an engine is 175 hp , estimate the total friction force (apporox) acting on the car when it is moving at a speed of 25 m//s . One horsepower equals 746 W .

A car of mass 1000 kg moving with a velocity of 36 km/h comes to rest in 5 seconds. What is the force exerted on the car?

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

A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m ?