A railway engine (mass `10^(4)` kg) is moving with a speed of 72 km/h. The force which should be applied to bring it to rest over a distance of 20m is

A motor car of mass 200 kg is moving with a velocity of 72 km/hr. By the application of brakes it is brought to rest in a distance of 100m. What is the force applied ?

A scooter of mass 75 kg is moving with a.Velocity 72 km/h. Calculate the force necessary to stop the scooter at a distance of 100 m.

A motor of 200 H.P. moves with a uniform speed of 72 km/h. The forward thrust applied by the engine on the car is

A motor of 200 H.P. moves with a uniform speed of 72 km/h. The forward thrust applied by the engine on the car is

A scooter of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop of the scooter in 10s is

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) ?

A railway engine of mass 2 tons moving at a speed of 72 km h^(-1) collides with a wagon at rest. After collision both have a common velocity of 36 km h^(-1) . Find the mass of the wagon. (1 ton = 1000 kg)