Kemv

Solving equation 3-2 for V and substituting the result in equation 3-1 gives:

which shows that the kinetic energy produced by a given impulse is inversely proportional to the mass of the object to which the impulse is applied.

If it is assumed that the piston of the sample gun weighs 1.5 pounds, the final velocity imparted to the piston at 0.008 second is determined by dividing the total impulse of 5.13 pound-seconds by the piston mass: That is:

_r 1 0.13X32.2 1liWf, , , \=w=------T-T-=110 (ft./sec.)

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