Momentum: P = M * V
Kinetic energy: KE = 1/2 M V^2
With M and V known, I'm sure everyone can calculate the momentum of a flying pellet, and it is just as easy to find its kinetic energy.
And when that pellet enters and retained in the soap, there is an energy transfer which drives the soap into motion. This motion normally shall be viewed as velocity acceleration (F = M * A) but since we can't measure the A reliably, we use the overall distance the soap moved. This then has to be compared with the distances of some known examples and because of this, the end result (the pellet MV) will only nr an approximate.
This message has been edited by karltsai from IP address 18.104.22.168 on Jun 4, 2003 8:22 AM This message has been edited by karltsai from IP address 22.214.171.124 on Jun 4, 2003 8:21 AM
Posted on Jun 4, 2003, 8:02 AM from IP address 126.96.36.199