Euler's equation of motion in spherical polar coordinates describes the dynamics of a rigid body rotating about a fixed point. It includes terms for the inertial forces, Coriolis forces, and centrifugal forces acting on the body. The equation is a vector equation that relates the angular acceleration of the body to the external torques acting on it.
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Newton's first equation of motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. In other words, an object will maintain its velocity unless a net external force is applied to change it.
The equation of motion was originally discovered by Sir Isaac Newton in his laws of motion. These laws describe the relationship between the motion of an object and the forces acting on it.
Newton's first law of motion states that momentum is a property of a mass system that is conserved as long as no net force is applied on it. If the question refers to Newton's second law of motion, the answer is yes.
F=ma or m=F/a
Newton's 2nd law of motion