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Consider a body of mass 'm' freely falling in a straight line.
It keeps accelerating, until it reaches its terminal velocity.
Once it does, it stops accelerating and its velocity becomes and remains constant. This implies there is no deceleration either.
SOOO, this would mean the total acceleration of the body is zero.
.: a = 0 --- [1]
The force acting upon a body is the product of its mass and its acceleration.
F = m.a
F = m.0 ( Applying [1] )
=> F = 0
So, does this mean that no force whatsoever is present in a falling body? o.o
This is not some question I found in some textbook, just so you know. It's something which just suddenly popped into my head from nowhere and has been bothering me greatly >.
by Im Alec on January 17th, 2012
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Comments
Thanks for your answer :)
by T4 on January 17th, 2012