Imagine a heavy book resting on a table. If you try to gently push the book across the table with the tip of your finger, it ...
The data displayed for this chart goes back to 1997, however we hope to be able to offer deeper historic information at a future point ...
The data displayed for this chart goes back to 1997, however we hope to be able to offer deeper historic information at a future point ...
Friction is a force that opposes motion. It is present whenever two surfaces rub over each other, such as when you rub your hands together, or when you apply the brakes on a bike or in a car.
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