question_answer

Which one of the following statements is incorrect?

A) If a force acting on a body of mass 1 kg produces an acceleration of \[1\text{ }m/{{s}^{2}}\]in it, the force is called one newton.

B) The net force acting on a body is equal to the change in its momentum per unit time.

C) According to law of inertia, when no unbalanced force is exerted on a body, it stays at rest or moves in a straight line with constant speed

D) Momentum is a vector quantity.

E) None of these