Assuming this is a continuation of your other rifle problem:
Mass of the man + rifle: 696N + 17N = 713N
m = 713N/9.80 m/s^2 = 72.8 kg
(3.6 * 10^-3 kg)/72.8 kg * (231 m/s)=
0.01142 m/s or 1.1 * 10^-2 m/s
If a 696 N man holds the rifle firmly against
his shoulder, find the recoil speed of man and
rifle.
Answer in units of m/s.
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