943280
Questão 1
Questão
All moving objects have..
Responda
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Power
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Kinetic Energy
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Speed
Questão 2
Questão
KE = ½ mv2 calculates..
Responda
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The Kinetic Energy
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The change in Kinetic Energy
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The loss of Kinetic Energy
Questão 3
Questão
Since kinetic energy is proportional to the speed squared, braking distances for vehicles are also proportional to the speed squared.
Responda
- True
- False
Questão 4
Questão
When a car stops, its kinetic energy changed into:
Responda
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heat in the brakes
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heat in the tyres
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sound of the tyres dragging
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friction
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magnetic force
Questão 5
Questão
Work Done by brakes =
Responda
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loss in kinetic energy
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gain in kinetic energy
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difference in kinetic energy
Questão 6
Questão
braking force x braking distance = loss in kinetic energy
Responda
- True
- False
Questão 7
Questão
What products do petrol and diesel make?
Responda
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Sulfur dioxide
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Carbon Dioxide
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Carbon Monoxide
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Carbon
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Nitric Oxide
Questão 8
Questão
What products do petrol and diesel make?
Responda
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Sulfur dioxide
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Carbon Dioxide
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Carbon Monoxide
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Carbon
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Nitric Oxide
Questão 9
Questão
What affects fuel consumption?
Responda
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Speed
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the amount of energy required for it do work against friction
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The amount of people in the car
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How long the journey is
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Road Conditions
Questão 10
Questão
Vehicles can be streamlined to produce ______ air resistance when they move,
Responda
-
More
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Less
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