elliott937 wrote:
Isaac Newton, as the story goes, sat under a tree, and as "something" fell on his head, he declared that he discovered "gravity".
F = ma, or Fw = mg . (where m = mass, and g = the pull of gravity, 9.8 m/sec^2)
Pay attention, quiz tomorrow . :)
In the U.S. we know the pull of gravity as 32 ft/sec^2. The formula also must include the condition "in a vacuum". Otherwise air molecules will slow the rate of acceleration.