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It means that if you start at 0m/s, after 1 second you go 9.8m/s, the next second, your speed is 19.6m/s, the third second your speed is 27.4 m/s, and you get faster and faster. This is a standard unit of acceleration, and particularly a standard figure for gravity (9.81m/s2)

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10y ago
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15y ago

9.8 m/s^2 is the acceleration due to gravity, near the surface of the Earth.

The American equivalent is about 32 ft/s^2 (32 feet per second squared).

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15y ago

It is the rate that a falling object accelerates in a vacuum at one gravity.

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14y ago

9.8 miles/sec2 = 1,609.3 times the acceleration of gravity

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Q: What does 9.8 meters per second squared mean?
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