Welcome to the Quiz!
This quiz contains 11 questions from a mix of 1 subtopics.
What is friction?
A force that aids the relative motion between two surfaces that are in contact
A force that only affects the motion of objects in the air
A force that opposes the relative motion between two surfaces that are in contact
A force that has no effect on the relative motion between two surfaces that are in contact
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What is one disadvantage of friction?
it allows motion to start and stop
it wastes energy
it increases the speed of vehicles
it prevents slipping
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What happens to the energy lost due to friction?
it is converted into mechanical energy
it is converted into light energy
it is converted into electrical energy
it is converted into heat energy
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How does friction affect the top speed of a vehicle?
it has no effect on the top speed
it decreases the top speed
it increases the top speed
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What is the purpose of aerodynamic shaping in vehicles?
to decrease the frictional force
to decrease the speed of the vehicle
to increase the frictional force
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What is one advantage of friction?
it allows motion to start and stop
it increases the speed of vehicles
it wastes energy
it limits top speed
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How does friction help us in everyday life?
it makes it harder for us to move
it limits our speed
it helps us to grip things
it wastes our energy
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Why is friction a problem at high speeds?
it has no effect on the vehicle at high speeds
it causes the vehicle to accelerate uncontrollably
it takes a lot of energy to overcome, limiting top speeds
it causes the vehicle to brake unexpectedly
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What is one way to minimise the frictional force in vehicles?
by aerodynamic shaping
by increasing the speed of the vehicle
by increasing the weight of the vehicle
by decreasing the weight of the vehicle
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List two advantages of friction.
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List two disadvantages of friction.
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