Definition of the Newton

One newton is the amount of force that will give an object of mass of 1kg an acceleration of 1ms^-2.Newton's second law states that the rate of change of momentum is proportional to the force acting on an object.F α k Δ(mv)/ΔtThe constant of proportionality is k = 1 if the newton is defined as the the amount of forcethat will give an object of mass of 1kgan acceleration of 1ms^-2.