A ball is dropped from a height of 20m. Assuming that air resistance is negligible: i) How fast will it be travelling when it hits the ground? ii) How long will it take to hit the ground?

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

What is the measurement of how fast an object moves relative to a reference point?

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