Which one of the following statements is true ?

Options

A. the center of mass of an object must lie within the object
B. all the mass of an object is actually concentrated at its center of mass
C. the center of mass of an object cannot move if there is zero net force on the object
D. None of the above

Answer

D

Explanation

If `vecF_("net") = 0 implies veca_(cm) = 0` but `vecv` may be non zero.