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, the rules of checkers do not allow a king to double jump on the same move. A double jump refers to making the jump twice in one move. The rules call for one movement per turn.