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To increase friction, the car goes faster so that the air resistance becomes greater. To decrease friction the car goes slower to decrease the air resistance acting on the car.
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Reducing friction in a machine increases or decreases?
Deceasing friction increases efficiency and reduces heat loss.
When does friction decrease?
Friction will decrease if the coefficient of friction decreases. This can be caused by having a smother surface up to a point. (When two surface are TOO smooth the friction actually increases due to molecular attraction.)
How does the coefficient of friction depend upon the normal force between the surfaces in contact?
-- The friction force changes, and is directly proportional to the normal force. -- The coefficient of friction doesn't change. It is the proportionality constant in the first statement.
How is the acceleration of a mass changes if the force applied to it increases or decreases?
Acceleration increases when force increases and decreases when force decreases.
What is the relationship between friction and efficiency of a machine?
The relationship between friction and the efficiency of a machine is when friction increases, efficiency decreases, and vice versa. That is why you can never have 100% efficiency, because there is always at least a little friction. They are inversely proportional, meaning, higher friction equals less efficiency.
Reducing friction in a machine increases or decreases?
Deceasing friction increases efficiency and reduces heat loss.
What is a feature of a car that increases friction?
the front boot of the car increases the friction on the car
Why do rivers speed up even when the radiant decreases?
There is less friction from the bed and banks of the river downstream (where the gradiant decreases) so the velocity increases.
Rosa has designed a pulley system for a school science project She has determined that as the coefficient of friction increases the efficiency of the pulley decreases With a coefficient of friction?
50*
When does friction decrease?
Friction will decrease if the coefficient of friction decreases. This can be caused by having a smother surface up to a point. (When two surface are TOO smooth the friction actually increases due to molecular attraction.)
What happens when the temperature of lava increases?
Its viscosity decreases, which allows it to flow easier.
How can friction increased?
Friction increases or decreases based on the surface changes. If a box were sliding down a smooth hill that suddenly becomes quite rough, then friction would increase. It would be the same vice versa for decreasing friction.
How does the coefficient of friction depend upon the normal force between the surfaces in contact?
-- The friction force changes, and is directly proportional to the normal force. -- The coefficient of friction doesn't change. It is the proportionality constant in the first statement.
What is an example of a negative correlation?
As the weight of a car increases, the miles per gallon decreases.
How is the acceleration of a mass changes if the force applied to it increases or decreases?
Acceleration increases when force increases and decreases when force decreases.
As airflow increases air resistance increases or decreases?
Air resistance increases when the speed of an object increases until it reaches terminal velocity. At this point the object is going as fast as it can, and if all forces remain the same the friction will not get any higher
How does friction decrease the acceleration of a car?
friction decreases the acceleration of a car by creating a greater force which pushes against the acceleration force. the friction is a force, but more of it means that whatever is pushing against it ( acceleration in this case) is made smaller.
