No, that is not a foul it may be a sprained ankle, though.
When a player on the team with the ball commits a foul
a foul?
In Basketball, a foul, is a penalty for doing something against the rules of the game.
Yes it is a foul but you don't get free throws
yes
Over-stepping a line is a foul in almost all the field events. There is also: throwing out of bounds or hitting a bar.
Yes, the foul line in basketball is also commonly referred to as the free-throw line.
on a foul
you hear it or see it
personal foul
It's a superstition many players (including me) have. Stepping on the foul line gives you bad luck.