Question

Why is it a good idea to have your hand extended forward when you are getting ready to catch a fast-moving baseball with your bare hand?

Answer 1

So have room to apply declaration to the ball. IF you have room, then you'll need to apply less of a force and the shock to your hand, arm, shoulder, will be less. If you don't have room and have to stop it in short order, you'll need to apply a greater force.

Answer 2

Also, it decreases the time that the ball moves.