When objects are moved further apart from each other, the force of gravity A) increases.
B) stays the same.
C) decreases.
D) decreases at first and then increases.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false