Answer:
A chair at rest on the floor has two forces acting on it its own weight that pulls it downward and the floor pushing upward on the chair, both of these forces are acting on it but the net force is 0, so the chair remains at rest and its velocity stays at 0.
It’s B i literally jus learned this
All of those are true, except the one about the radius.
Both ends of a chord have to be on the circle, but one end
of a radius is at the center, so a radius can't be a chord.
