70-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 844 N. What is the acceleration of the elevator?

Answer : The acceleration of the elevator is,

Explanation :

Formula used to calculate the acceleration of the elevator is:

where,

F = force = 844 M

m = mass of man = 70 kg

g = acceleration due to gravity =

a = acceleration of the elevator = ?

Now put all the given values in the above formula, we get:

Thus, the acceleration of the elevator is,

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.)