Friction

Friction is a force!
Friction tries to stop or slow things down as one surface moves over another.

Depending on the situation this force can be useful.

In motorsports friction plays an essential role.
From acting at the brakes where they move against the wheels,
to allowing drivers to grip their steering wheel!

As the speed of an object increases so does the friction
Friction causes grip so things like tyres can move over road surfaces.
It also helps the tyres not to slip while they are moving!

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KS4