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Why do cars have several gears?

Updated: 8/21/2019
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8y ago

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There are limits to how fast or how hard engines can turn, and gears allow you to trade power for speed, or the other way around. If cars didn't have gears, they'd either struggle to get going, or not be able to go very fast.

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8y ago
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Q: Why do cars have several gears?
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