It's a judgment call. I think the answer is this: A play is scored as a fielder's choice if, in the official scorer's judgment, the fielder had a clear opportunity to throw the batter/runner out at first, but instead chose to putout another baserunner. So I suppose a batted ball is scored as a force out if the fielder has no realistic chance (in the scorer's eyes) to get the batter/runner out at first and his only choice is to tag another runner or throw to another base.
One answer:it would be considered a force play. Another answer:The runner from 1st base would be out on a force play. The batter would be credited with a base hit. It would only be a fielder's choice if the official scorekeeper felt the batter could have been thrown out at 1st but the fielder chose to throw to 2nd (thus the term "fielder's choice"). It is unlikely that the batter would have been thrown out at 1st on the play you describe, but the final authority is the official scorekeeper.
in order to play you must use the force.
A player can run out of the path (for instance, while rounding the bases) as long as there is not a possible play. Once there is a possible play, the runner must be within 3-4 feet of the base path.
If you reach the base before the ball but overrun the base, you must then be tagged out. Once you reach the base it is no longer a force play and the fielder must tag you off the base to make an out.
The force-out rule is the same in little league as it is in the majors. If there is nowhere else for the runner to go because the runner behind him must advance, the force-out is at the base he's headed to.
on a batted ball the fielder has the right of way if the fielder is in the basepath and the ball isn't near him the runner has the right of way
A force play is in effect when a runner or runners are on base so that a fielder has to step on a base in order to record an out of the runner in question. Here's an example with the Cleveland Indians. Say Grady Sizemonre is on 1st base and Hafner is batting. If Hafner hits a ground ball to an infielder then they can force Sizemore out at 2nd base. A runner is forced to advance because the batter becomes a batter-runner. The runner may be tagged or the next base can be tagged by a fielder.