A car rolls down hill and accelerates form 1.6m/s to 9.3 m/s. If the acceleration caused by the hill is 2.5m/s^2 the amount of time the car was on the hill is?

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

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?

Does heating a metal wire increase or decrease its electrical resistance? why?