Your accelerator is a very sensitive pedal which only needs minimal pressure applied to it.

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It's very rare that you would ever need to press your accelerator all the way to the floor of the car.

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It's rare that you'd use your accelerator on corners, during your first few driving lessons

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You can read the highway code section that covers accelerating HERE

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The more you understand the theory of accelerating the easier you'll find it in practice.