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Old April 9, 2013, 10:13 PM   #22
Idaho Spud
Senior Member
Join Date: April 7, 2010
Posts: 326

Around 1800, the ballistic pendulum was used to measure the momentum of the projectile fired by a gun; dividing the momentum by the projectile mass gives the velocity.

The 19th century was a hundred years long.
"I should have picked alcohol, drugs, or beating my wife..."
Pete Rose
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