One person can get out of the way more easily than 10. Of course, abstract hypothetical questions don't answer what one would do under real circumstances, e.g.

One person can get out of the way more easily than 10. Of course, abstract hypothetical questions don't answer what one would do under real circumstances, e.g. there's a difference between seeing an athletic, aware guy on one track who you know can get out of the way vs. a blind lady.