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Forces and Motion
Is Friction Good or Bad?
Can Friction be a Good Thing?
Friction can be good.
When we walk we push backwards against the ground,
the opposing force pushes us forwards. Without
friction our feet would slip and walking would be impossible.
It has been shown previously that a
car is moved forwards
by the wheels which try to turn and push against the road.
The direction of the forces for the car wheels and the road
are the same as the forces above for a man walking.
Without friction a car
could not move forwards, be steered or be stopped.
There are many examples where
friction is a necessary force in the world in which we live.
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