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Accompanied forces to motion
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................is a property of an object to resist the change of its phase from motion to rest or from rest to motion
Inertia
Lubricating and oiling mechanical machines. why?
to decrease the friction between moving parts of the machines and prevent their erosion
Car tires are covered with a very coarse (rough) substance. why? To (increase – decrease) friction between tires and the road .
To increase friction between tires and the road to help the car in starting motion and stopping
From the benefits of friction force....................,.........................,............................
It prevents feet from slipping on the road , It helps car in stopping and start moving c) helps in lighting matches
Policeman advise drivers to use safety belts in cars and planes .a) to help inertia b) to stop the friction force c) To stop the inertia forces
To stop the forces of inertia to prevent car or plane passengers from being injured when a sudden change in motion occurs.
The car passengers are rushed backward when the car moves suddenly a)due to friction forces b) due to inertia of passengers to maintain state of stopping and resist sudden change c)due to inertia of passengers to maintain chang
due to inertia of the passengers to maintain state of stopping and resist the sudden change
The car passengers are rushed forward when the car stops suddenly. a) due to friction force b) due to inertia of the passengers to resist sudden change c)due to inertia of passengers to allow changing phase of object
due to inertia of the passengers to maintain state of motion and resist the sudden change .
The car brake performance is an application of .......................................
Friction forces
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