Respuesta :
Answer:
The mailman used a force of 225N.
Step-by-step explanation:
The work formula is given by:
[tex]W = F*l[/tex]
In which W is the work, F is the force and l is the length of the object.
In this problem, we have that:
A mailman performed 180 J of work lifting a box 0.8 m. This means that [tex]W = 180, d = 0.8[/tex]. So
[tex]W = F*l[/tex]
[tex]180= F*0.8[/tex]
[tex]F = \frac{180}{0.8}[/tex]
[tex]F = 225[/tex]
The mailman used a force of 225N.
