To find F (force) and N (work), we can use the formula:

Work = Force x Distance

Given that Work (A) = 5 kJ (or 5,000 J), Distance (S) = 250 m, and Time (t) = 20 s, we first need to calculate Force (F):

Work (A) = Force (F) x Distance (S)

5,000 J = F x 250 m

F = 5,000 J / 250 m
F = 20 N

Therefore, Force (F) = 20 N.

Next, we can find N (work):

Work (N) = Force (F) x Distance (S)

N = 20 N x 250 m
N = 5,000 J

Therefore, Work (N) = 5,000 J.