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May 18th, 2012, 12:02 AM   #1
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A body is released from a great fall freely towards earth an

Hi all

Can explain to me more about that this question because I don't understand fully

A body is released from a great fall freely towards earth another body is released from the same height exactly one second later .
Find the separation between the bodies after two second of the release of the second body ?


[color=#008040]As I understand It wants distance? But what is other givens ?

g = 9.81
t= 2s
u = zero

How I can find the distance if the time of other body not given ?[/color]
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May 18th, 2012, 12:15 AM   #2
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Re: A body is released from a great fall freely towards eart

If we set time t = 0 to be at the time of the release of the second body, then the distance traveled by the first body at time t is:



and the distance traveled by the second body is:



and the separation between the bodies at time t is then:

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May 18th, 2012, 12:20 AM   #3
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Re: A body is released from a great fall freely towards eart

Good

I got H = 24.52 m
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May 18th, 2012, 08:14 AM   #4
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Re: A body is released from a great fall freely towards eart

If you are going to round to two decimal places, you should write h = 24.525 m ? 24.53 m.
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