Think about a girl on a swing. when is the kinetic energy of the girl zero? question 5 options: a: when she stops moving at the top of the swing b: when the girl is swinging backwards c: at the bottom of the swing d: it is never zero

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell