The number of significant figures in 10001 is
two.
five.
three.
six.

5

Explanation:

10001

The last digit is non zero and there are 5 digits.  The zeros in between are considered significant

There are 5 significant digits

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

answer; how far out of place which the object finished relative to the starting location;