An electric freight train is initially at rest at a terminal. The train’s motor produces a constant force of 180 000 N180\,000\text{ N}180000 N to act on the train, and the train begins to move.
State the form of energy gained by the train as it begins to move.
The train travels a distance of 2.0 km2.0\text{ km}2.0 km along a straight, horizontal track.
Calculate the work done on the train during this part of the journey.
The mass of the train is 200 000 kg200\,000\text{ kg}200000 kg. Calculate the maximum possible speed of the train at the end of the first 2.0 km2.0\text{ km}2.0 km of the journey.
In practice, the speed of the train is much less than the value calculated in (b)(ii). Suggest one reason why this is the case.
After travelling 2.0 km2.0\text{ km}2.0 km, the train reaches its maximum speed. It continues at this constant speed on the next section of the track where the track follows a curve which is part of a horizontal circle. State the direction of the resultant force on the train as it follows the curved path.
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.