We know that, SI unit of mass, m = 1 kg
SI unit of acceleration, a = 1 ms
-2 Now, from Newton’s second law, F = ma
SI unit of force, F = 1 kg x 1 ms
-2 = 1 kg-ms
-2 1 kg-ms
-2 is known as 1 newton (N)
∴ 1 newton (N) = 1 kg-ms
-2 1 newton can be defined as, “the force is said to be 1 newton if it produces 1 ms
-2 acceleration in a body of 1 kg mass”.
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