Question

derive Newton's first law of motion from second law of motion​

Answer 1

Answer:

Newton's second law states that net force is equal to change in momentum by time and by the first law of Newton a body D will retain its position still an external force is applied to it for example if it is moving then it is moving and if it is in rest then it is in rest kill an external force applied on it so in second law of motion if we make the net force zero and we know that mass is constant so there is no change in velocity so that the net force becomes zero that instead the velocity is constant that means that the object follows inertia

Answer 2

Explanation:

Newton's first law states that a body stays at rest if it is at rest and moves with a constant velocity unit if a net force is applied on it. Newton's second law states that the net force applied on the body is equal to the rate of change in its momentum.

F = ma

or F = m(v-u) / t

or Ft = mv - mu

That is, when F = 0, v = u for whatever time, t is taken. This means that the object will continue moving with uniform velocity, u throughout the time, t. If u is zero than v will also be zero, i.e., object will remain at rest.