A 0.15 kg ball is thrown upward and reaches a height of 7m. What will its KE be when it falls back down, just before it hits the ground?
A. 1.1 J
B. 10.3 J
C. 1.5 J
D. 15 J

please have explanation

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