a constant force is acting on a body of mass 3kg. changes it moments 6kg m/s to 10.5kg m/s in 25 secands in a certain direction,what is the magnitude of force?
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According to newton's second law..
F * dt = dP
F = Force
dt = change in time
dP = change in momentum
F = dP/dt = (10.5-6)/25 = 4.5/6 = 0.75 N
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