A worker drops his hammer off the roof of a house. The hammer has a mass of 9 kg, and gravity accelerates it at the usual 9.8 m/s2. How much force does the earth apply to the hammer
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MASS OF HUMMER = 9 kg..
gravity is positive acceleration.. so.. 9.8m/s2.. (downward... )
We know that.... F = m *a
( mass * acceleration)
F = 9 * 9.8
F = 88.2. newton Force apply....
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