Which of the following are examples of centripetal acceleration check all that apply

Gravity, from the center of mass of the box, extending downward normal force, from the floor under the box, extending upward, equal to gravity push force, acting at a point on the box, extending in the direction of motion friction, acting at any point on the box directly opposite the push, extending directly opposite to the motion

Can you show the

The extra penny comes form u and the other preson