In checkers, yes
No, you cannot jump your own checker with a king.
yes, a normal piece can jump a king
A king can jump as far as needed to legally capture pieces.
yes
No
Either a king or an ordinary playing piece may jump a king in a game of checkers in the United States of America. But the rules are different in Italy. Specifically, in an Italian game of checkers, only a king is allowed to jump a king.
no
no
soldiers can't jump kings
a king cannot jump 2 blocks in a row so therefore he can't if he is in checkers or not.
yes
No, a king in checkers cannot jump over empty spaces. When making a jump, a player must jump over an opponent's piece to capture it, landing on an empty square immediately beyond that piece. If there are no opponent's pieces to jump over, the king cannot make a move into an empty space.