P3 e-h LO - To consolidate your knowledge of the topic.

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Presentation transcript:

P3 e-h LO - To consolidate your knowledge of the topic

Calculate the GPE and velocity

Fuel Consumption Fuel consumption is measured in litres per km. (We also uses miles per gallon as a measure of performance – a high figure is good.) Larger vehicles, and those with a greater acceleration have more powerful engines, so that energy can be transferred more quickly from the fuel to do work. When a car brakes, the KE is transferred to heat. Braking and accelerating repeatedly will transfer more energy than travelling at a constant speed. The amount of braking and accelerating will depend on driving style and the road conditions (e.g. single carriageway, lots of bends, traffic lights). At higher speeds, resistive forces are greater and more work is done against friction. If more energy is transferred the fuel consumption is increased (increasing cost, and pollution).

1.Why should we aim to reduce carbon dioxide emissions ? 2.Use the table to decide whether there is a connection between carbon dioxide emissions and the type of fuel used. Explain. 3.Use the table to decide whether there is a connection between carbon dioxide emissions and the amount of fuel used. Explain. 4.Suggest why more people are buying diesel-powered cars.

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Terminal Velocity S4s Explain in terms of forces, how moving objects; increase speed, decrease speed and maintain their speed. Acceleration due to gravity is the same For any object at a given Point on the Earth’s surface