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How far would a 1.00kg ball have to fall freely to reach a speed of 100 km per h?
Wiki User
∙ 13y ago
Two comments before we jump into it:
1). We have to ignore air resistance, and consider only the effects of gravity.
2). Considering only the effects of gravity, the mass of the falling object makes no difference.
If the air doesn't get at them, all things fall to earth with the same acceleration.
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100 km per hour = 100,000/3,600 meters per sec = 250/9 m/s
The acceleration of gravity is 9.8 m/s, so the time to reach the target speed is
(250/9) divided by (9.8) = 2.834 seconds
In that length of time, the freely falling body falls [ 1/2 g T2 ] = 39.37 meters
Wiki User
∙ 13y ago
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