Answer:
20.243 s
Explanation:
Because the escalator and person moving in the same direction, relative velocity can be calculated by summing the velocity of the escalator and velocity of the person.
The speed of escalator can be calculated as,

Relative velocity
Therefore total time required to take the person to get to the top

AM radio stations I believe
Use the formula below for this question:

re-arrange to solve for a:

now simply plug in your variables and there's your answer :). If you ever get stuck, you can look up the kinematic equations!
Work=applied Force x distance
= 1275 x 26
=33150 Joules