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Longitud del cañon del rifle = 1 m
Velocidad Inicial = 0
Vf² = Vi² + 2ae
Donde Vf = Velocidad con la que sale la bala del rifle (290 m/s)
Vi = 0
a = Aceleracion que experimenta la bala.
e = Longitud del Cañon del rifle.
Vf² = 2ae==> Despejando a==> a = (Vf²/2e)
a = ((290²)/2x1) ==> a = (84100)/(2) = 42050 m/s²
F = ma.
Pasemos los 40 gr a Kg = (40gr)x(1Kg/1000gr) = 0.04 Kg
F = (0.04)(42050) = 1682N
F = 1682N
Fuerza Promedio = 1682N