The amount of kinetic energy an object possesses depends on......
mass and speed
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Give 2 alternatives for fossil fuels in the future.
bio-fuels and solar energy
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Kinetic energy =
1/2 mv squared
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mass =
2 x KE/vsquared
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velocity =
square root of 2 x KE/m)
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Explain how solar and bio-fuelled vehicles reduce AND produce pollution
They reduce pollution at POINT OF USE which may lead to an overall decrease in CO2 emissions; however, they do produce pollution DURING PRODUCTION in power stations where the electricity is generated
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Explain the factors that affect car fuel consumption figures
energy required to increase KE, energy required to work against friction, driving style, speed and road conditions
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Give 3 disadvantages about battery-driven electric car
the batteries take up a lot of space, the batteries need recharging frequently causing pollution, the car has a limited range, the car is expensive to buy.
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Give 2 disadvantages with a solar-powered car
the sun does not always shine, you need to have a back-up such as a battery.
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What about a car affects the fuel consumption?
shape
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Complete the sentence: The shape of an object can.....
influence its top speed
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Fill in the gaps: ......... can lead to ......... and ........ and greater fuel consumption by vehicles.
GREATER DRAG can lead to ENERGY LOSS and INEFFICIENCY and greater fuel consumption by vehicles.
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Other cards in this set
Card 2
Front
Give 2 alternatives for fossil fuels in the future.
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