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Home Q & A Board Science-Related Homework Help Physics
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nuttadap nuttadap
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11 years ago
In free fall, the acceleration of any object is always 9.8ms-2. But in the presence of air (with air resistance), is the initial acceleration of the object still always 9.8ms-2?
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wrote...
#1
11 years ago
It really depends on the local conditions -- things fall differently on planets with different gravity, objects with a greater surface area will be slowed more due to atmopheric resistance (think penny vs. feather), etc.
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#2
11 years ago
The intial acceleration is always 9.8 m/s/s. Not until the object starts to move does air resistance become a factor.
wrote...
#3
11 years ago
9.8ms^-2is K only when there is no applied force other than gravitational force. but here the mass of body and the result of the air resistant on the body
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