Newton's first law is a special case of the second law Explain?

Answer 1

Newton's second law states that the rate of change of momentum of a body is equal to the resultant force on the body and is in the same direction as the resultant force.

Thus, it also implies that when the resultant force on a body is zero, the rate of change of momentum is zero, and if it concerns a body of constant mass, the acceleration is zero. This is Newton's first law, which states that 'any body continues in its state of rest or uniform motion in a straight line unless a resultant force acts on it to cause it to accelerate'.

Answer 2

Newton's first law states that an object will remain at rest or in uniform motion unless acted upon by an external force. This can be seen as a special case of the second law because if the net force acting on an object is zero (as in the case of no external force), the acceleration will be zero, and the object will either remain at rest or continue to move at a constant velocity, in accordance with the first law.