> meets a stationary object, there is a lose of momentum thereby
> slowing down the acceleration process.
Momentum is conserved in a collision, although energy may be
dissipated. If you think of each floor as a rigid body, the force of
impact acts to speed up the lower floor and slow down in upper floor,
such the mu1Vu1 = ml1Vl2+mu2Vu2. The upper floor will have to slow
down a little bit momentarily becasue it is subject to the reaction
of the force needed to break the support connections for the lower
floor.
Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw@skypoint.com | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania
1864)
http://www.skypoint.com/~chrisw/
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