What happens between potential and kinetic energy as the objects moved. PLEASE HELP ME!!!

Why there is no inductive reactance in dc circuits

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.